350 results for Family: Poaceae.
| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
| Poaceae | Aegilops | Goatgrass | | | 
|
| Poaceae | Aegilops cylindrica | Jointed Goatgrass | Fields, pastures, roadsides, other disturbed areas. | Native of Mediterranean Europe and w. Asia. | 
|
| Poaceae | Aegilops neglecta | Small Goatgrass, Three-awned Goatgrass | Disturbed areas. | Native of Mediterranean Europe and w. Asia. Reported from Arlington County, VA. | 
|
| Poaceae | Aegilops triuncialis | Barbed Goatgrass | Disturbed areas. | Native of Mediterranean Europe east to w. and c. Asia. Known from MD. | 
|
| Poaceae | Agropyron | Crested Wheatgrass | | | 
|
| Poaceae | Agropyron cristatum | Crested Wheatgrass | Disturbed areas. | Native of Eurasia. | 
|
| Poaceae | Agrostis | Bentgrass | | | 
|
| Poaceae | Agrostis altissima | Coastal Bog Bentgrass | Wet pine savannas, sinkhole ponds, edges of swamp forests. | MA (?) and NJ south to se. LA, primarily on the Coastal Plain. | |
| Poaceae | Agrostis canina | Brown Bentgrass, Velvet Bentgrass | Roadsides, disturbed open areas, lawns. | Native of Eurasia. Naturalized in North America to DE, se. PA (Rhoads & Block 2007), WV, and TN (Kartesz 1999). | 
|
| Poaceae | Agrostis capillaris | Rhode Island Bentgrass, Colonial Bentgrass, Browntop | Meadows, roadsides, disturbed areas. | Native of Eurasia (and possibly n. North America). | 
|
| Poaceae | Agrostis elliottiana | Elliott's Bentgrass, Southern Bentgrass | Dry soils of barrens, fields, and rock outcrops. | MD west to s. OH, and e. KS, south to Panhandle FL (Gadsden County) and c. TX; with scattered reports westwards to CA. | 
|
| Poaceae | Agrostis exarata | Spike Bentgrass | Disturbed areas. | Native of w. North America, a waif in e. North America. Reported for very widely scattered sites in e. North America, including Leslie County, KY (Kartesz 2010, 2022). | 
|
| Poaceae | Agrostis gigantea | Redtop, Black Bentgrass | Fields, pastures, roadsides, disturbed areas. | Native of Eurasia. | 
|
| Poaceae | Agrostis hyemalis | Ticklegrass, Small Bentgrass, Hairgrass | Moist to dry fields, meadows, and roadsides, sometimes also in barrens or thin soils over outcrops. | ME west to WI and SD, south to FL, TX, nd Mexico. | 
|
| Poaceae | Agrostis mertensii | Arctic Bentgrass | In thin soil of high elevation rocky summits; also in riverside flood scour areas at much lower elevations. | In North America south to ME (Mt. Katahdin), NH (White Mountains), VT, NY (Adirondack Mountains), WV (Spruce Knob), TN (Roan Mountain, Abrams Creek), NC (Roan Mountain, Big Yellow Mountain, Black Mountains), QC, BC, CO, UT (?), and AK; n. Europe. | 
|
| Poaceae | Agrostis perennans | Upland Bent, Autumn Bentgrass | Mesic to dry forests, woodlands, barrens, clearings, disturbed areas, and also in a variety of wetlands such as bogs, fens, seepage swamps, and depressions. | NL (Newfoundland) west to MN, south to n. FL and TX; c. Mexico south to c. South America. | 
|
| Poaceae | Agrostis scabra | Fly-away Grass, Rough Bentgrass | Bogs, fens, seeps, meadows, old fields, other open habitats. | Throughout North America, though mainly in cooler climates (ne. and w. United States, Canada), south to s. Mexico; ne. Asia. | 
|
| Poaceae | Agrostis stolonifera | Creeping Bentgrass | Disturbed areas, wet, moist, or dry. | Native of Eurasia. | 
|
| Poaceae | Aira | Hair Grass | | | 
|
| Poaceae | Aira caryophyllea | Silver Hair Grass | Fields, roadsides, disturbed areas. | Native of Europe. | 
|
| Poaceae | Aira elegans | Elegant Hair Grass, Annual Silver Hairgrass | Fields, roadsides, disturbed areas. | Native of Europe. Reported for Calloway County, KY (Abbott & Thompson 2019). | 
|
| Poaceae | Aira praecox | Early Hair Grass, Spike Hairgrass | Fields, roadsides, disturbed areas. | Native of Europe. Reported for NC by Burk (1961), and collected in the NC Sandhills (B. Sorrie, pers.comm. 2004). | 
|
| Poaceae | Allolepis | | | | |
| Poaceae | Allolepis texana | Allolepis, False Saltgrass | Prairies. | C. and w. TX south to ne. Mexico. | |
| Poaceae | Alloteropsis | | | | 
|
| Poaceae | Alloteropsis cimicina | Bugseed Grass | Lakeshores, roadsides, gardens, other disturbed areas. | Native of se. Asia (or more generally the Paleotropics). Naturalized in FL Panhandle and ne. FL. | 
|
| Poaceae | Alopecurus | Foxtail Grass | | | 
|
| Poaceae | Alopecurus aequalis var. aequalis | Short-awn Foxtail Grass | Seeps, wet swales, wet meadows, ditches, shores. | Circumboreal, south in North America to NJ, w. VA, IN, MS (J.R. Rigby, pers.comm. 2020), MO, and CA. | 
|
| Poaceae | Alopecurus arundinaceus | Creeping Meadow Foxtail | Pastures, disturbed areas. | Native of Eurasia. Reported for Bell County, KY (Kartesz 2022). | 
|
| Poaceae | Alopecurus carolinianus | Carolina Foxtail Grass | Moist fields, ditches, forests, bottomlands. | MA west to BC, south to n. FL and CA, the northern parts of the distribution apparently adventive. | 
|
| Poaceae | Alopecurus creticus | | Waif on ballast. | Native of e. Mediterranean Europe and w. Asia. | |
| Poaceae | Alopecurus geniculatus | Water Foxtail Grass | Ditches, wet clearings, other low, disturbed areas. | Native of Eurasia. | 
|
| Poaceae | Alopecurus myosuroides | Slender Foxtail Grass | Moist fields, roadsides. | Native of Mediterranean Europe, n. Africa, and w. Asia. | 
|
| Poaceae | Alopecurus pratensis | Meadow Foxtail | Roadsides, fields. | Native of Eurasia. Reported for Piedmont of nc. GA (Jones & Coile 1988), for scattered locations in PA (Rhoads & Block 2007), and for VA, KY, WV, MD, and DE (Kartesz 1999). Reported for Ashe County, NC (Poindexter & Murrell 2008). | 
|
| Poaceae | Alopecurus rendlei | | A waif on ballast. | Native of Mediterranean Europe. | 
|
| Poaceae | Amelichloa | | | | |
| Poaceae | Amelichloa clandestina | | | | |
| Poaceae | Amphibromus | | | | |
| Poaceae | Amphibromus scabrivalvis var. scabrivalvis | Rough Amphibrome | Disturbed areas. | Native of South America. Established in Tangipahoa Parish, LA. | |
| Poaceae | Amphicarpum | Peanut-grass | | | 
|
| Poaceae | Amphicarpum amphicarpon | Pinebarrens Peanut-grass | Wet, peaty, open soils, especially peat-burns in pocosin edges, primarily in the outer Coastal Plain, responding strongly to fire. | An Atlantic Coastal Plain endemic, scattered and rather rare, from e. MA to nc. FL. | 
|
| Poaceae | Amphicarpum muehlenbergianum | Florida Peanut-grass, Blue Maiden-cane | Natural depression ponds, flatwoods ponds, pondcypress savannas in clay-based Carolina bays. | S. FL and s. AL north to se. NC, rare north of s. GA. First found in NC in the late 1980s by M. Boyer. | 
|
| Poaceae | Anatherum | | | | 
|
| Poaceae | Anatherum arctatum | Florida Bluestem | Wet pinelands, pineland bogs, rarely moist disturbed ground. | N. FL west to w. Panhandle of FL and adjacent s. AL, south to s. FL. The curious record from Pamlico County, NC (the specimen at GH, collected by Randolph and Randolph in 1922, annotated as A. arctatus by Campbell) is likely a waif. | 
|
| Poaceae | Anatherum bicorne | West Indian Bluestem, Barbas de Indio | Open, disturbed areas. | Native of the West Indies, Mexico, etc. and probably only a non-native waif in our area (s. FL). | 
|
| Poaceae | Anatherum brachystachyum | Shortspike Bluestem | Moist to wet pinelands, natural pond margins, bogs, disturbed roadsides. | Se. SC (McMillan et al. 2002) south to FL, south to s. FL, west to e. FL Panhandle. A. brachystachyus has been considered by some to range north to NC. | 
|
| Poaceae | Anatherum cabanisii | Florida Splitbeard Bluestem | Longleaf pine sandhills, scrubby, mesic, and wet pinelands. | Endemic to s. and c. peninsular FL. | 
|
| Poaceae | Anatherum campbellii | Deceptive Bluestem | Pine savannas, pine flatwoods, maritime wet grasslands, disturbed pinelands, other wetlands. | Se. VA south to s. FL and west to w. FL; also in the Bahamas (Sorrie & LeBlond (1997). | 
|
| Poaceae | Anatherum capillipes | Dryland White Bluestem | Dry to mesic pine flatwoods, sandhills, adjacent roadbanks. | Se. NC south to s. FL and west to s. AL. | 
|
| Poaceae | Anatherum cretaceum | Purple Bluestem, Chalky Bluestem | Wet pine savannas, pine flatwoods, maritime forests, ditches, wet disturbed sites. Often becoming abundant in mesic or wet-mesic flatwood sites that are roller chopped or otherwise mechanically disturbed. | Se. VA south to c. peninsular FL and west to e. TX (Singhurst, Sorrie, & Holmes 2012). | 
|
| Poaceae | Anatherum cumulicola | Scrub Bluestem | Florida scrub, scrubby flatwoods, longleaf pine sandhills. | Endemic to c. and s. FL peninsula. | 
|
| Poaceae | Anatherum dealbatum | Wetland White Bluestem | Wet pine savannas, ditches adjacent to those savannas, depressional wetlands. | S. NJ south to s. FL and west to e. TX; also in the Bahamas (Sorrie & LeBlond 1997). | 
|
| Poaceae | Anatherum floridanum | Florida Bluestem | Florida scrub and scrubby pinelands, longleaf pine sandhills. | S. GA west to FL Panhandle, south to s. FL. | 
|
| Poaceae | Anatherum glomeratum | Common Bushy Bluestem | Swamps, wet pine savannas, pine flatwoods, bogs, fens, depression ponds, wet disturbed sites. | S. MA south to c. peninsular FL and west to s. MS, primarily on the Coastal Plain, but scattered inland to w. PA, WV, c. KY, c. TN and AR. | 
|
| Poaceae | Anatherum gyrans | Elliott’s Bluestem | Dry to moist forests, woodlands, longleaf pine sandhills, pine savannas, fields, and disturbed areas. | S. NJ west to s. IN, s. IL, s. MO, south to s. FL and TX. | 
|
| Poaceae | Anatherum hirsutius | Hairy Bluestem | Wet pine savannas, pine flatwoods, adjacent ditches, other wet disturbed sites. | E. MD south to c. peninsular FL, west to se. LA. Material west of the Mississippi River appears to be of this taxon, but needs additional study. | 
|
| Poaceae | Anatherum longiberbe | Longbeard Bluestem | Dry sandy soils of sandhills and dunes, calcareous wet pinelands and dry pine rocklands (this may be another new species, under study). | Se. NC south to s. and w. FL; Bahamas. | 
|
| Poaceae | Anatherum miamiense | Miami Bluestem | Pine rocklands. | Endemic to s. FL. | 
|
| Poaceae | Anatherum mohrii | Tawny Bluestem, Bog Bluestem | Wet pine savannas, sphagnous bogs. | Se. VA south to n. FL, west to LA. | 
|
| Poaceae | Anatherum perangustatum | Narrowleaf Bluestem | Wet pinelands, clay-based Carolina bays, other depression wetlands, and boggy wetlands. | E. VA south to c. peninsular FL, west to e. TX. | 
|
| Poaceae | Anatherum species 2 | Haws Run Bluestem | Calcareous wet longleaf pine savanna. | Endemic to se. NC (as far as is known). | |
| Poaceae | Anatherum subtile | | Pine flatwoods and savannas, subtropical and often hyperseasonal grasslands. | South GA s. to c. FL, w. to e. LA. | 
|
| Poaceae | Anatherum tenuispatheum | Maritime Bushy Bluestem | Maritime wet grasslands, brackish marsh edges, calcareous wet grasslands, interdune swales and ponds, seepages in limestone areas, prairies, moist disturbed sites. | Se. VA and c. OK south to s. FL and c. and s. TX, south into Central America; West Indies. | 
|
| Poaceae | Anatherum ternarium | Splitbeard Bluestem | Longleaf pine sandhills, dry to moist soils of woodlands and openings. | DE and s. NJ west to KY and s. MO, south to FL and TX. | 
|
| Poaceae | Anatherum tracyi | Tracy's Bluestem | Dry sandy or clayey soils of longleaf pine sandhills, Florida scrub, disturbed sites. | E. NC south to s. FL and west to MS. | 
|
| Poaceae | Anatherum virginicum var. 1 | Smooth Bluestem | Longleaf pine savannas. | NC south to peninsular FL, west to e. LA. Known from NC and SC (Berkeley and Marion counties; P. McMillan, pers. comm.). | 
|
| Poaceae | Anatherum virginicum var. virginicum | Old-field Broomstraw, Broomsedge, "Sedge Grass", "Sage Grass", "Broom Sage" | Old fields, roadbanks, disturbed sites. | MA west to MI and e. KS, south to FL and e. TX; West Indies; Mexico and Central America. | 
|
| Poaceae | Andropogon | Broomsedge, Bluestem | | | 
|
| Poaceae | Andropogon gerardi | Big Bluestem, Turkeyfoot | In a wide variety of habitats, usually rather dry, such as longleaf pine sandhills, glades, cliffs, and rock outcrops, in the Piedmont in woodlands, former prairie-like sites, woodlands, open forests, and river-scour grasslands, in the Mountains in glades, riverside scour areas, and rarely in grassy balds, ascending to at least 1600 m over mafic rocks (on Old Field Bald, Watauga and Ashe counties, NC). | QC west to SK, south to FL and AZ and Mexico. | 
|
| Poaceae | Andropogon hallii | Sand Bluestem | Sandy soils. | ND and MT south to TX, NM, AZ, and Mexico; with eastward outliers likely representing introductions (as in IN, IL, MN, MO, and AR). The status of the species in MO is discussed by Braun (2019). | 
|
| Poaceae | Anthenantia | Silkyscale | | | 
|
| Poaceae | Anthenantia rufa | Purple Silkyscale | Wet pine savannas in the outer Coastal Plain, seepage bogs and moist sandhill-pocosin ecotones in the fall-line sandhills. | Se. NC south to n. FL and west to w. LA. | 
|
| Poaceae | Anthenantia texana | Texas Silkyscale | Pine flatwoods, coastal prairies, bog margins. | S. AR south to w. LA and e. TX. | 
|
| Poaceae | Anthenantia villosa | Green Silkyscale | Longleaf pine sandhills, especially in submesic swales. | Se. NC south to s. FL and west to e. TX. | 
|
| Poaceae | Anthephora | | | | 
|
| Poaceae | Anthephora hermaphrodita | | Growing along a stream in Alachua County, FL (Pond A; IND-26577), otherwise rarely persisting from cultivation. | Native of tropical America. | 
|
| Poaceae | Anthoxanthum | Vernal Grass | | | 
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| Poaceae | Anthoxanthum aristatum | Annual Vernal Grass | Roadsides, disturbed areas. | Native of Europe. | 
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| Poaceae | Anthoxanthum odoratum | Sweet Vernal Grass | Lawns, roadsides, disturbed areas. | Native of Europe. | 
|
| Poaceae | Apera | Windgrass | | | 
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| Poaceae | Apera interrupta | Dense Silky-scale, Italian Windgrass | Disturbed areas. | Native of Europe. | 
|
| Poaceae | Apera spica-venti | Common Windgrass | Disturbed areas. | Native of Eurasia. Reported for se. PA (Rhoads & Klein 1993), MD, KY, MO, nc. TX (Kartesz 2022). | 
|
| Poaceae | Apluda | Apluda | | | 
|
| Poaceae | Apluda mutica | Apluda | Ore piles, a waif (Reed 1964). | Native of tropical Asia. | 
|
| Poaceae | Aristida | Three-awn Grass | | | 
|
| Poaceae | Aristida adscensionis | Sixweeks Three-awn | Dry habitats; eastwards in disturbed areas. | Native of w. United States (?) south into Neotropics. Reported for SC (FNA) | 
|
| Poaceae | Aristida basiramea | Forktip Three-awn | Sandy soils; introduced eastwards. | Native of mw. United States. ME and ON south to SC (FNA), AL, TX, and CO (FNA). Reported occurrence in PA is based on misidentification (S. Grund, pers.comm., 2023). | 
|
| Poaceae | Aristida beyrichiana | Southern Wiregrass | Longleaf pine sandhills, savannas, flatwoods, and seepages, from very dry to seasonally saturated soils. | S. SC south to s. FL, west to s. MS. | 
|
| Poaceae | Aristida condensata | Big Three-awn | Sand barrens, dry, sandy soils of longleaf pine sandhills, sandy pine rocklands of s. FL. | Sc. NC south to s. FL, west to s. MS (Sorrie & Leonard 1999). | 
|
| Poaceae | Aristida curtissii | Curtiss's Three-awn | Roadsides, disturbed areas, bare eroding soil. | ME west to WY, south to n. FL, AR, OK, and CO, perhaps largely or adventive east of the Mississippi River. | 
|
| Poaceae | Aristida desmantha | Curly Three-awn | Dry pinelands, other dry sites. | IL, MO, and sc. NE south to w. LA, TX, and n. Mexico. | 
|
| Poaceae | Aristida dichotoma | Fork-tip Three-awn, Poverty Grass | Roadsides, fields, disturbed areas, bare eroding soil. | ME west to WI, south to n. FL and TX. | 
|
| Poaceae | Aristida divaricata | | West of our region, in dry hills and plains, especially in pinyon-juniper woodlands; collected in our region only from a test nursery. | Sc. And sw. United States to Guatemala. Allred (1986) reported the collection of this sw. North American species from a Soil Conservation Service test nursery in Chapel Hill, NC. | 
|
| Poaceae | Aristida fendleriana | | Rocky calcareous areas, prairies. | SD, MT, and CA south through OK, TX, NM, and AZ into Mexico. | 
|
| Poaceae | Aristida floridana | Key West Three-awn | Rockland hammocks, dry disturbed areas over limestone. | Endemic to s. FL. Sometimes considered to also occur in the Yucatan peninsula. | 
|
| Poaceae | Aristida geniculata | Northeastern Slim-spike Three-awn | Dry open habitats, disturbed areas. | The distribution and habitats of A. geniculata and A. longespica in our area are poorly known, pending further field and herbarium investigation. | 
|
| Poaceae | Aristida glauca | Nealley's Three-awn | Rocky slopes, woodlands and scrub. | KS and CA south to TX, NM, AZ, CA, and Mexico. | 
|
| Poaceae | Aristida gyrans | Corkscrew Three-awn | Scrubby flatwoods and other dry pinelands, open sandy firelanes. | E. GA and w. Panhandle FL, south to s. FL. In Bryan, Long, and Montgomery counties in e. GA (Sorrie 1998b), and in wc. GA (J. Allison, pers. comm.). POWO (2024) also alleges this species to be distributed in Cuba and Hispaniola (needing investigation). | 
|
| Poaceae | Aristida havardii | | | Reported for c. OK by Kartesz (2022); needing investigation. | |
| Poaceae | Aristida lanosa | Woollysheath Three-awn | Dry sandy soils of longleaf pine sandhills and fields. | NJ south to FL, west to TX, north in the interior to MO and OK. | 
|
| Poaceae | Aristida longespica | Southeastern Slim-spike Three-awn | Disturbed areas. | The distribution and habitats of A. geniculata and A. longespica in our area are poorly known, pending further field and herbarium investigation. | 
|
| Poaceae | Aristida longiseta | Red Three-awn | Rocky and sandy areas, eastwards adventive in disturbed areas. | MB west to BC, south to TX, CA, and Mexico; adventive eastwards. Also reported from NC, but the collection is from a Soil Conservation Service test nursery, and there is no evidence of naturalization. | 
|
| Poaceae | Aristida mohrii | Mohr's Three-awn | Longleaf pine sandhills, Florida scrub, dry pine flatwoods. | Panhandle FL and sw. GA west to s. AL; apparently disjunct in SC (Chesterfield and Richland counties). POWO (2024) also alleges this species to be in Cuba and Hispaniola; this needs investigation. | 
|
| Poaceae | Aristida oligantha | Prairie Three-awn | Rock outcrops in thin soil, roadsides, fields, disturbed areas. | VT west to e. WY, south to FL, TX, and n. Mexico; distribution in w. North America is probably adventive. | 
|
| Poaceae | Aristida palustris | Longleaf Three-awn | Wet pine savannas and flatwoods, limesink depressions. | Se. NC south to FL, west to TX. A record from the Cumberland Plateau of KY (Laurel County) is a false report. | 
|
| Poaceae | Aristida patula | Tall Three-awn | Dry to moist sandy soils of pond margins, pine flatwoods, sabal palm hammock margins, other pinelands, dunes, pastures. | Endemic to FL Panhandle (Dixie, Franklin, Gadsden, Leon, Taylor, and Wakulla counties) (Wunderlin & Hansen 2006) and peninsula. | 
|
| Poaceae | Aristida purpurascens | Arrowfeather | Dry habitats, especially in dry sandy or rocky soils. | MA west to WI and KS, south to FL, TX, and Mexico (CHP, CHH, COA, SON) | 
|
| Poaceae | Aristida purpurea | Purple Three-awn | Sandy or rocky soils. | KS and CA south to LA, TX, NM, AZ, CA, and Mexico. | 
|
| Poaceae | Aristida ramosissima | S-curve Three-awn | Pine flatwoods, dry upland soils. | OH, s. IN, s. IL, c. MO. se. KS south to Panhandle FL (Bay County) (Wunderlin & Hansen 2011), nc. MS (Morris & MacDonald 2012), LA, and c. TX. Adventive in Fairfax County, VA. | 
|
| Poaceae | Aristida rhizomophora | Florida Three-awn | Wet pine flatwoods and savannas, wet fringes of dry prairies. | A Florida endemic, north to Baker, Duval, and Nassau counties. | 
|
| Poaceae | Aristida simpliciflora | Southern Three-awn, Chapman's Three-awn | Wet pine savannas. | Sw. GA west through the FL Panhandle and c. AL to s. MS (Sorrie & Leonard 1999), and south into c. peninsular FL and s. peninsular FL (Wilder & McCollum 2023); northward apparently as a rarity in se. NC and e. SC (Berkeley County; McMillan & Porcher 2005) and se. NC. A. simpliciflora was believed to be a Gulf Coastal Plain endemic until found by R. LeBlond in 1999 in wet savannas in se. NC (Green Swamp savannas, Brunswick County; Old Dock Savanna, Columbus County; and The Neck Savanna, Pender County). It is reported for sw. GA (Jones & Coile 1988, Kartesz 1999). Harper also reports it for c. GA. | 
|
| Poaceae | Aristida spiciformis var. spiciformis | Bottlebrush Three-awn, Spike Three-awn | Wet pine savannas and seepage areas. | E. SC (McMillan et al. 2002) south to s. FL, west to MS; West Indies (Cuba, Puerto Rico). Allred (1986) also reported this species from NC, but the documentation is unknown to us. | 
|
| Poaceae | Aristida stricta | Carolina Wiregrass, Pineland Three-awn | Coastal Plain pinelands of nearly all sorts, ranging from the driest white-sand sandhills to seasonally saturated pine savannas dominated by a mixture of longleaf pine and pond pine, largely or entirely replaced in the wettest savannas by Sporobolus teretifolius, S. pinetorum, Calmovilfa brevipilis, Muhlenbergia expansa, and Ctenium aromaticum; also in Piedmont areas adjacent to the Coastal Plain and formerly supporting fire-maintained longleaf pine woodlands. | Ne. NC (south of Albemarle Sound and the Roanoke River), south to ne. SC (Lee and Kershaw counties) | 
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| Poaceae | Aristida tenuispica | Southern Arrowfeather | Longleaf pine sandhills, pine flatwoods, Florida wet prairies, other sandy habitats. | NC south to s. FL and west to MS. | 
|
| Poaceae | Aristida ternipes | Spidergrass | | TX, NM, and AZ south through Mexico and Central America to n. South America; West Indies. Reported for s. FL (Monroe County), but based on misapplication of A. floridana (Wunderlin et al. 2024). | 
|
| Poaceae | Aristida tuberculosa | Dune Three-awn, Sand Three-awn, Seaside Needlegrass | Longleaf pine sandhills, coastal dunes, other dry, sandy habitats such as sandy roadsides. | Se. NH south to NJ and disjunct in e. VA in the outer Coastal Plain; from sc. NC south to c. FL and Panhandle FL, west to s. MS (Sorrie & Leonard 1999), mostly in the inner Coastal Plain; and also near the Great Lakes in sw. MI, n. IN, n. IL, s. WI, se. MN, and e. IA. | 
|
| Poaceae | Aristida virgata | | Moist to wet pine savannas, wet pine flatwoods, mountain bogs (Henderson Co., NC), other moist habitats. | S. NJ south to s. FL, west to TX, primarily on the Coastal Plain; Central America (needing confirmation). | 
|
| Poaceae | Aristida wrightii | Wright's Three-awn | Calcareous soils. | OK, CO, s. UT, s. NV, and s. CA south to s. TX and Mexico. | 
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| Poaceae | Arrhenatherum | False Oatgrass | | | 
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| Poaceae | Arrhenatherum elatius var. bulbosum | Tuber Oatgrass, Onion Couch | Meadows, fields, and roadsides. | Native of Europe. Cited for VA in HC. | 
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| Poaceae | Arrhenatherum elatius var. elatius | Tall Oatgrass | Meadows, fields, roadsides. | Native of Europe. Documented for SC (Bradley et al. [in prep.]). | 
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| Poaceae | Arthraxon | Basket Grass | | | 
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| Poaceae | Arthraxon hispidus var. hispidus | Basket Grass, Joint-head Grass | Moist ditches, bottomlands, disturbed areas. | Native of se. Asia. Like Microstegium, Arthraxon is steadily and aggressively increasing its abundance across most of our region. | 
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| Poaceae | Arundinaria | Cane | | | 
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| Poaceae | Arundinaria alabamensis | Tallapoosa Cane | Oak-hickory forests and woodlands on mesic, submesic, and xeric slopes and uplands, sometimes occurring as well in hillside
seepages, and sometimes along perennial streams (Triplett 2023). | As far as known, endemic to ec. AL and also in GA piedmont, but expected to have a somewhat wider distribution. | 
|
| Poaceae | Arundinaria appalachiana | Hill Cane | Dry to moist forests on slopes. | Sw. NC and se. TN south to nw. SC, n. GA and ne. AL, primarily in the southwestern end of the Blue Ridge, but extending east, south, and west into adjacent provinces. Plants which may represent this species have been found in sw. WV (Chief Logan State Park; J. Burkhart, pers.comm., 2024). | 
|
| Poaceae | Arundinaria gigantea | Giant Cane, River Cane | Bottomland and riparian forests, lower slopes and bluffs along streams, seeps, stream banks, and extending into less mesic and even dry settings on circumneutral or alkaline soils over limestone or dolomite, or in loess deposits along the Mississippi River. | S. OH south to FL and e. TX. | 
|
| Poaceae | Arundinaria tecta | Switch Cane, Small Cane, Mutton Grass | Pine savannas, pocosins, canebrakes, blackwater swamps, Piedmont seeps, generally (but not solely) in wetlands. | Primarily of the Southeastern Coastal Plain, but extending to the eastern Gulf Coastal Plain and also Piedmont: e. MD to FL and s. AL. | 
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| Poaceae | Arundo | Giant Reed | | | 
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| Poaceae | Arundo donax | Giant Reed | Roadsides, waste dumps, other disturbed areas. | Native of the Old World (most likely w. Asia) (Hardion et al. 2014). | 
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| Poaceae | Astrebla | | | | 
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| Poaceae | Astrebla lappacea | Curly Mitchell Grass | Waste area near wool mill. | Native of Australia. | 
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| Poaceae | Avena | Oats | | | 
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| Poaceae | Avena fatua | Wild Oats | Disturbed areas. | Native of Europe and c. Asia. | 
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| Poaceae | Avena sativa | Oats | Fields and disturbed areas, commonly planted but not long-persistent. | Native of Middle East. | 
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| Poaceae | Avena sterilis | Animated Oats | Waif at old seaports. | Native of Mediterranean Europe and w. Asia. | 
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| Poaceae | Avenella | Hairgrass | | | |
| Poaceae | Avenella flexuosa | Common Hairgrass, Wavy Hairgrass | Grassy balds, high elevation rocky summits, rocky or sandy woodlands. | Circumboreal, ranging south in North America to n. GA, OH, WI, and MN; disjunct in AR and OK, and in Mexico. | 
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| Poaceae | Avenula | | | | 
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| Poaceae | Avenula pubescens | Downy Oatgrass | Disturbed areas. | Native of Eurasia. | 
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| Poaceae | Axonopus | Carpetgrass | | | 
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| Poaceae | Axonopus compressus | Southern Carpetgrass, Tropical Carpetgrass | Moist disturbed areas, lawns. | Probably native in the se. United States, from SC south to s. FL, west to TX; West Indies; Mexico to South America. | 
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| Poaceae | Axonopus fissifolius | Common Carpetgrass | Pine flatwoods, sandy forests, fields, roadsides, lawns. | VA south to FL, west to TX and OK, and extending into tropical America (to Argentina). | 
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| Poaceae | Axonopus furcatus | Big Carpetgrass | Maritime forests, other sandy forests, bottomlands, roadsides, calcareous wet meadows, lawns. | Se. VA south to FL, west to TX and AR, mainly Coastal Plain but scattered inland; apparently adventive in e. MD (Knapp et al. 2011); also in South America (Brazil to Argentina), unclear whether native there. | 
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| Poaceae | Bambusa | Bamboo | | | 
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| Poaceae | Bambusa bambos | Giant Thorny Bamboo | Suburban areas, weakly spreading vegetatively from horticultural use. | Native of s. and se. Asia. | 
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| Poaceae | Bambusa multiplex | Hedge Bamboo, Dwarf Bamboo, Oriental Hedge Bamboo | Disturbed areas, spread vegetatively from horticultural use. | Native of se. Asia. Reported as naturalized or persistent in portions of the southeastern United States, including GA, FL Panhandle, and FL peninsula. | 
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| Poaceae | Bambusa vulgaris | Common Bamboo | Disturbed areas, spread vegetatively from horticultural use. | Native of tropical Asia. Reported for SC (Kartesz 2022), apparently in error. | 
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| Poaceae | Beckmannia | Slough Grass | | | 
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| Poaceae | Beckmannia syzigachne | American Slough Grass | Exposed reservoir shores and bottoms, disturbed areas. | NL (Labrador) and NS west to YT and AK, south to ME, NY, n. OH, IL, KS, NM, AZ, and CA; disjunct in sw. TN and n. MS; Asia. Scattered occurrences south and east of its main distribution are likely adventive introductions by waterfowl or humans. Reported for Hardin County, TN (K3, FNA). Uncommon on an exposed reservoir bottom in n. MS with Alopecurus carolinianus (J.R. Rigby, pers.comm., April 2017). | 
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| Poaceae | Bothriochloa | Beardgrass, Cane Bluestem | | | 
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| Poaceae | Bothriochloa barbinodis | Cane Bluestem, Pinhole Bluestem | Sandy or rocky limestone soils, eastward in disturbed areas, including roadsides. | OK and TX west to CA, south into Mexico, n. Central America, and South America. | 
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| Poaceae | Bothriochloa bladhii | Australian Bluestem | Road medians, pastures, other disturbed areas. | Native of subtropical Asia and Africa. Reported from e. TN (according to specimen cited by FNA and Z) and Alachua County, FL. | 
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| Poaceae | Bothriochloa exaristata | Awnless Bluestem | Black clay (calcareous) soils of coastal prairies. | W. LA and se. TX; disjunct in Brazil, Argentina, and Paraguay. | 
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| Poaceae | Bothriochloa glabra | | | | |
| Poaceae | Bothriochloa hybrida | | Open calcareous habitats; eastwards on roadsides. | Native of TX south into Mexico. Described as "widespread and well-established along roadsides in Georgia" (Carter, Baker, & Morris 2009). | 
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| Poaceae | Bothriochloa ischaemum | King Ranch Bluestem, KR Bluestem, Yellow Bluestem | Highway medians and margins, other disturbed places. | Native of s. Europe and w. Asia. Reported for SC (Kartesz 1999) and GA (Carter, Baker, & Morris 2009). Reported for s. MO (Thomas 2017). "This species, along with B. laguroides [torreyana], appear to be spreading steadily, especially along the I-81 corridor where they are conspicuous during the late Summer and Fall flowering and fruiting season" (Virginia Botanical Associates 2019). | 
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| Poaceae | Bothriochloa longipaniculata | Longspike Silver Bluestem | Grasslands, woodlands, disturbed areas, roadsides. | LA to TX, south to Mexico and Panama; South America. Reported for GA (Zomlefer et al. 2018). Reported for SC Coastal Plain (Bradley et al. [in prep.]). | 
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| Poaceae | Bothriochloa pertusa | Pitted Bluestem | Disturbed areas, especially over calcareous substrates (like roadsides, pastures, and disturbed prairies of the Black Belt). | Native of s. and se. Asia. Introduced at scattered sites in e. North America, including FL, LA, MD, MS (FNA, Kartesz 1999), and AL (Diamond, England, & Dykes 2013). | 
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| Poaceae | Bothriochloa torreyana | Silver Bluestem | Dry, sandy prairies and other grasslands, eastwards in road medians and other disturbed areas. | MO and NV south to w. LA, TX, CA, and Mexico; also Argentina; adventive elsewhere (the exact boundaries of the native distribution obscure). Reported for SC (Kartesz 1999), ne. GA (Jones & Coile 1988; Allred & Gould 1983), e. TN, and c. TN (Chester et al. 1993), s. MO (Thomas 2017), in some cases as B. saccharoides var. torreyana. | 
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| Poaceae | Bouteloua | Grama | | | 
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| Poaceae | Bouteloua aristidoides | Three-awn Grama, Needle Grama | Dry prairies and loamy alluvial areas; eastwards on ballast. | C. and s. TX west to CA south into Mexico. | 
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| Poaceae | Bouteloua barbata var. barbata | Sixweeks Grama | Dry grasslands in sandy soils, disturbed areas. | KS to CA, south to e. and s. TX, NM, AZ, and Mexico; South America. | 
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| Poaceae | Bouteloua chondrosioides | Sprucetop Grama | Prairies. | C. TX, w. TX, and s. AZ south into Mexico. | 
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| Poaceae | Bouteloua curtipendula var. caespitosa | Side-oats Grama | Loose, calcareous soils. | OK, CO, UT, and CA south to s. TX, NM, AZ, and Mexico (to Argentina). | 
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| Poaceae | Bouteloua curtipendula var. curtipendula | Side-oats Grama | Prairies, dry rocky slopes and bluffs over calcareous rocks (such as limestone, dolomite, or calcareous shale) or ultramafic rocks (such as serpentine or metabasalt), limestone glades. | S. CT west to MT, south to VA, e. TN, nw. GA, AL, Panhandle FL (Gadsden County), TX, AZ, and CA; also in Central and South America. The older literature refers to B. curtipendula as introduced in SC, but the single specimen documenting its occurrence there appears to be from experimental plantings at Clemson University; there is apparently no evidence of its establishment there. B. curtipendula is now sometimes included in seed mixes, and appears as a waif or short-term introduction, including in the Piedmont of SC (K. Bradley, pers.comm., 2020). B. curtipendula occurs on serpentine in the Piedmont of GA (J. Allison, pers. comm.). | 
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| Poaceae | Bouteloua dactyloides | Buffalo Grass | Prairies, lawns, disturbed areas. | MN, MB, and AB south to w. LA, TX, NM, AZ, and widespread in Mexico. | 
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| Poaceae | Bouteloua dimorpha | Acapulco Grass | Cultivated as a turf grass, roadsides, disturbed areas. | Native of Mexico. | 
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| Poaceae | Bouteloua eriopoda | Black Grama | Dry rocky slopes. | KS, CO, UT, and s. CA south to c. TX, NM, AZ, and widespread in Mexico (BCN, CHH, COA, DUR, NLE, SLP, SON, TAM, ZAC). | 
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| Poaceae | Bouteloua gracilis | Blue Grama | Prairies, eastward in disturbed areas. | ON west to BC, south through c. and w. United States into Mexico (where widespread). Reported for SC (Gould 1979), but this is from a planting at an agricultural experiment station. | 
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| Poaceae | Bouteloua hirsuta | Hairy Grama | Maritime grasslands (FL), pine rocklands (FL), prairies and dry grasslands (TX, OK), xeric longleaf pine sandhills (GA), disturbed areas. | WI, MN, ND, WY, NV and s. CA south to sw. LA, TX, NM, and AZ and south into Mexico; disjunct in peninsular FL and in sw. GA. | 
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| Poaceae | Bouteloua pectinata | Tall Grama | Limestone outcrops. | OK south to s. TX | 
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| Poaceae | Bouteloua repens | Slender Grama | Prairies and open brushland; or eastwards in disturbed areas. | OK, NM, and AZ south through TX to Mexico (where widespread) and n. South America; West Indies. | 
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| Poaceae | Bouteloua rigidiseta | Texas Grama, Mesquite Grass | Prairies, roadsides, disturbed areas. | Sw. AR, OK, and e. NM south to w. LA, TX, and Mexico (CHH, COA, NLE, SON, TAM). | 
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| Poaceae | Bouteloua trifida | Red Grama | Dry grasslands and rocky slopes. | TX, NM, UT, and CA south to Mexico (where widespread). | 
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| Poaceae | Bouteloua uniflora | One-flower Grama, Nealley's Grama | Rocky calcareous soils. | TX south to Mexico (where widespread). | 
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| Poaceae | Brachyelytrum | Shorthusk | | | 
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| Poaceae | Brachyelytrum aristosum | Northern Shorthusk | Moist forests, mostly at moderate to high elevations, such as northern hardwoods and spruce-fir. | NL (Newfoundland), QC, ON, and MN south to n. NJ, PA, n. OH, n. IN, and s. WI, and in the mountains to sw. NC, e. TN, nw. SC, and ne. GA. | 
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| Poaceae | Brachyelytrum erectum | Common Shorthusk | Mesic forests, in the Mountains at lower elevations than B. aristosum. | MA, NY, OH, MI, and s. WI south to Panhandle FL and e. TX. | 
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| Poaceae | Brachypodium | | | | 
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| Poaceae | Brachypodium distachyon | | | Reported for Lampasas County, TX (Kartesz 2022); needs research. | |
| Poaceae | Brachypodium glaucovirens | | Escaped from horticultural use. | Native of Mediterranean Europe and Africa. | |
| Poaceae | Brachypodium pinnatum | Heath False Brome, Tor Grass | | | 
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| Poaceae | Brachypodium sylvaticum ssp. sylvaticum | Slender False Brome | Roadsides and yards. | Native of Europe. This species is still a relatively new invader of very scattered sites in the e. US. It has become well established in a small number of intact natural areas in upstate NY (Tompkins and Genesee counties), where it has become increasingly difficult to control and impossible to eradicate. It has also been found in Charlottesville, VA, where it is also persistent and spreading (Virginia Botanical Associates 2022). | 
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| Poaceae | Briza | Quaking Grass | | | 
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| Poaceae | Briza maxima | Greater Quaking Grass | Disturbed areas. | Native of the Mediterranean region. Reported in e. GA (Jones & Coile 1988; Kartesz 2015). | 
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| Poaceae | Briza media var. media | Perennial Quaking Grass | Disturbed areas. | Native of Europe. Reported for scattered locations in PA (Rhoads & Block 2007), MD, DE, and TN (Kartesz 2015). | 
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| Poaceae | Briza minor | Lesser Quaking Grass | Fields, roadsides, powerline rights-of-way, other disturbed areas. | Native of Mediterranean Europe, n. Africa, and w. Asia. | 
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| Poaceae | Bromus | Brome-grass, Brome | | | 
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| Poaceae | Bromus arenarius | Australian Brome | Waif on ballast; westwards on dry, often sandy slopes, fields, and waste places | Native of Australia. | 
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| Poaceae | Bromus arvensis | | Disturbed areas. | Native of Mediterranean Europe. Reported as introduced for nc. GA (Jones & Coile 1988), for VA, MD, PA, and NJ (Kartesz 1999), and for KY (Campbell 2007). Map is highly speculative/provisional because of uncertainties in circumscription. | 
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| Poaceae | Bromus briziformis | Rattlesnake Brome | Disturbed areas. | Native of w. Asia. Reported as an introduction in ne. North America, south to MD, NJ, PA, DE (Kartesz 1999). | 
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| Poaceae | Bromus catharticus | Rescue Grass | Cultivated fields, roadsides, disturbed areas. | Native of South America. | 
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| Poaceae | Bromus ciliatus | Fringed Brome | Seepage areas, fens, moist areas near high elevation creeks, grassy balds, high elevation woodlands, mostly over mafic or calcareous rocks. | Widespread in n. North America: NL (Labrador) to AK, south in the east to PA, and in the mountains to NC; south in the west to Mexico. Known in NC only from Bluff Mountain and Long Hope Valley, Ashe and Watauga counties, and Roan Mountain, Mitchell County. | 
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| Poaceae | Bromus commutatus | Hairy Chess, Meadow Brome | Disturbed areas. | Native of Europe. The relationship and relative distribution of this species and Bromus racemosus is poorly known for our area. | 
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| Poaceae | Bromus diandrus | Ripgut Brome, Ripgut Grass | Disturbed areas, wool waif (SC). | Native of Mediterranean Europe. | 
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| Poaceae | Bromus erectus | Short-branched Brome | Disturbed areas. | Native of Europe. | 
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| Poaceae | Bromus hordeaceus ssp. hordeaceus | Soft Chess, Lopgrass | Fields, disturbed areas. | Native of Europe. See Bradley et al. [in prep.] for discussion about its occurrence in SC. | 
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| Poaceae | Bromus hordeaceus ssp. pseudothominei | Soft Chess | Disturbed areas. | Native of Europe. | |
| Poaceae | Bromus hordeaceus ssp. thominei | | Disturbed areas. | Native of Europe. | |
| Poaceae | Bromus inermis | Smooth Brome, Hungarian Brome, Awnless Brome | Fields, roadsides, clearings, other disturbed areas. | Native of Europe. | 
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| Poaceae | Bromus japonicus | Japanese Chess, Japanese Brome | Fields, roadsides, gardens, other disturbed areas. | Native of Asia. Mapping is unusually speculative. | 
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| Poaceae | Bromus kalmii | Kalm Brome, Canada Brome, Arctic Brome, Prairie Brome | Forests and woodlands, shale woodlands and barrens, grassy ridgetop oak forests. | ME west to SD, south to MD, w. VA, and IA. | 
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| Poaceae | Bromus lanceolatus | Mediterranean Brome | Disturbed areas. | Native of Mediterranean Europe. | 
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| Poaceae | Bromus latiglumis | Riverbank Brome, Auricled Brome, Hairy Woodbrome, Flanged Brome | Alluvial soils along rivers. | ME to MT, south to NC and OK. In NC apparently only along large rivers flowing west through the Appalachians into the Mississippi River drainage, notably the New and the French Broad. | 
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| Poaceae | Bromus lepidus | Slender Soft Brome, Scaly Brome | Fields and disturbed areas. | Native of Europe. | 
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| Poaceae | Bromus madritensis | Foxtail Brome | Wool waste, other disturbed areas. | Native of Mediterranean, n. Africa, and w. Asia. | 
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| Poaceae | Bromus marginatus | Mountain Brome | | Reported by Jones & Coile (1988) for nc. GA and by FNA for MS. | 
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| Poaceae | Bromus nottowayanus | Satin Brome, Nottoway River Brome, Virginia Brome | Moist forests, especially along small stream bottoms. | The range of this species is poorly known, owing to confusion between it, B. pubescens and B. latiglumis. It is apparently known from MD, VA, and NC, west to TN, IL, IN, MO, and AR. Reported for Mountains of SC (Pickens County) (Bradley et al. [in prep.]). Probably more common than portrayed in the map. | 
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| Poaceae | Bromus pubescens | Common Eastern Brome, Canada Brome, Hairy Woodland Brome | Mesic forests, especially on rocky slopes, rich bottomland forests, calcareous bluffs. | S. ON west to AB, south to FL, TX, and (reportedly) AZ. | 
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| Poaceae | Bromus racemosus | Smooth Brome | Disturbed areas. | Native of Europe. | 
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| Poaceae | Bromus ramosus | | Habitat unknown. | Native of Eurasia and n. Africa. Reported for DC and MS (Kartesz 1999). | 
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| Poaceae | Bromus rubens | Foxtail Chess, Red Brome | Waste areas near wool-combing plants, other disturbed areas. | Native of Mediterranean Europe. The SC occurrences come from areas around wool-combing plants, and were likely introduced on wool from w. United States, where this European species is well-established. | 
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| Poaceae | Bromus scoparius | Broom Brome | Disturbed areas. | Native of Mediterranean Europe, Africa, and w. Asia. | 
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| Poaceae | Bromus secalinus | Cheat, Common Chess, Rye-brome | Disturbed areas. | Native of Europe. | 
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| Poaceae | Bromus squarrosus | Squarrose Brome | Disturbed areas. | Native of Eurasia. Reported for KY and NJ (Kartesz 1999). | 
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| Poaceae | Bromus sterilis | Barren Brome, Poverty Brome, Cheatgrass | Disturbed areas. | Native of s. Europe. | 
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| Poaceae | Bromus tectorum | Downy Brome, Downy Chess, Downy Cheat, Junegrass, Cheatgrass | Disturbed areas. | Native of Europe. | 
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| Poaceae | Bromus texensis | Texas Brome | Thickets. | Endemic to TX (or possibly also in Mexico) (Diggs et al. 2006). | 
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| Poaceae | Calamagrostis | Reedgrass | | | 
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| Poaceae | Calamagrostis arenaria | European Beachgrass | Dunes, disturbed areas. | Native of Europe. Introduced in MD and PA (Kartesz 1999). | 
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| Poaceae | Calamagrostis breviligulata ssp. breviligulata | American Beachgrass | Dunes along the Atlantic Ocean and major estuaries (such as the Chesapeake and Delaware Bays), rarely on dry sandy shores along Coastal Plain Rivers (in VA). | NL (Newfoundland) south to about Cape Hatteras, Dare County, NC, and on shores around the Great Lakes; planted farther south. As a native grass, Calamagrostis breviligulata ranged south only to NC, where it was rare; it is now commonly planted ("sprigged") in the Carolinas as a sand-binder and is now common south into SC. | 
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| Poaceae | Calamagrostis cainii | Cain's Reedgrass | High elevation rocky summits. | Endemic to a few mountain-tops in the Southern Appalachians, C. cainii, once thought to be endemic to Mount LeConte, TN, was discovered at two sites in NC in 1989 and 1990 – Mount Craig, Yancey County, and Craggy Pinnacle, Buncombe County (Wiser 1991). | 
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| Poaceae | Calamagrostis canadensis var. canadensis | Bluejoint, Canada Reedgrass | Wet meadows along streams, high elevation openings, such as grassy balds and cliff bases. | Widespread and common across n. North America, reaching its southern limit in the east in w. NC, e. TN (Chester et al. 1993), and ne. GA (Rabun Bald, Rabun County). | 
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| Poaceae | Calamagrostis canadensis var. macouniana | | Bottomlands. | NL (Newfoundland) and AB south to NJ, PA, VA?, OH, w. KY, IL, MO, NE, WY, OR. Reported for VA (FNA), the documentation unknown. Reported south to NJ and KY only (Kartesz 1999). {investigate} | 
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| Poaceae | Calamagrostis epigejos | Bushgrass, Feathertop | Disturbed areas. | Native of Eurasia. | 
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| Poaceae | Calamagrostis inexpansa | Northern Reedgrass | Wet meadows, fens. | NL (Newfoundland) and NL (Labrador) west to AK, south to NY, OH, n. WV (Preston and Randolph counties), IA, AZ, and CA; apparently disjunct in w. NC; ne. Asia. | 
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| Poaceae | Calamagrostis insperata | | Rock outcrops; rocky woodlands. | OH and MO south to TN and AR. | 
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| Poaceae | Calamagrostis macrolepis | Far Eastern Reedgrass | | Native of n. Eurasia. | |
| Poaceae | Calamagrostis pickeringii | Pickering’s Reedgrass | Bogs. | NL west to ON, south to NY and s. NJ. | 
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| Poaceae | Calamagrostis porteri | Porter's Reedgrass | Dry to dry-mesic forests and woodlands, especially in fire-maintained situations, forest edges, serpentine barrens, cliff bases. | NY to AL, in the Appalachians; it was first reported from NC by Ware (1973). | 
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| Poaceae | Calamovilfa | Sand-reed | | | 
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| Poaceae | Calamovilfa arcuata | Cumberland Sandreed | Riverside scours, usually in areas of sandstone cobble. | Ouachita Mountains of w. AR and e. OK; Cumberland Plateau of TN (Cumberland, Morgan, Scott, and White cos.), KY (McCreary County), AL (Blount and Dekalb cos.), and GA (Walker County) (Zomlefer et al. 2018). | 
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| Poaceae | Calamovilfa brevipilis | Pinebarren Sandreed | Pine savanna-pocosin ecotones, longleaf pine sandhill seepage bogs, streamhead seeps, pocosins, boggy powerline rights-of-way. | A "bimodal endemic", with two areas of distribution: Pine Barrens of NJ and the Coastal Plain (very rarely lower Piedmont) of e. NC, n. SC, and s. VA. | 
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| Poaceae | Calamovilfa curtissii | Curtiss’s Sandreed | Moist pinelands and edges of natural ponds. | FL Panhandle and e. peninsular FL. | 
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| Poaceae | Calamovilfa gigantea | Giant Sandreed | Sand dunes, prairies, sandy shores. | NE and UT south through KS and OK to TX, NM, and AZ. | 
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| Poaceae | Calamovilfa longifolia var. longifolia | Prairie Sand-reed | Sandy bottomlands. | MI, WI, MB, NT, and BC south to s. IL, MO, KS, NM, ID, and WA. | 
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| Poaceae | Calamovilfa longifolia var. magna | Great Lakes Sandreed | Beaches. | Naturalized from the more western Great Lakes. | 
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| Poaceae | Catapodium | | | | |
| Poaceae | Catapodium rigidum ssp. rigidum | Fern Grass | Shell mounds (SC), railroad tracks, stock pens, waste areas around wool-combing mills, other disturbed areas, perhaps only a waif in the northern parts of our area and somewhat established in the Gulf Coastal Plain. | Native of Mediterranean Europe. | 
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| Poaceae | Cenchrus | Burgrass, Sandspur | | | 
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| Poaceae | Cenchrus americanus | Pearl Millet | Fallow fields, other disturbed areas. | Native of the Old World (Africa and tropical Asia). | 
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| Poaceae | Cenchrus biflorus | Indian Sandbur | Disturbed areas, ballast, presumably only a waif. | Native of Africa and s. Asia. Reported from ballast in Mobile, AL. | 
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| Poaceae | Cenchrus brownii | Slim-bristled Sandspur | Disturbed areas, maritime grasslands. | S. FL (where apparently native), elsewhere in the se. United States (NC, GA, AL, where presumably introduced); West Indies; Central America, n. South America. The sole known NC specimen was collected in 1885 by Gerald McCarthy in NC "in locis navalibus et vastis". | 
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| Poaceae | Cenchrus ciliaris | Buffelgrass | Disturbed areas. | Native of Africa. | 
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| Poaceae | Cenchrus echinatus | Southern Sandspur, Bristly Sandspur, Hedgehog Grass, Cadillo | Fields, roadsides, disturbed areas. | NC (and DC?) south to FL, west to CA, south into the tropical America. The basis for the record for w. VA in FNA is not clear. | 
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| Poaceae | Cenchrus flaccidus | Himalayan Fountaingrass | Disturbed areas. | Native of c. Asia. | 
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| Poaceae | Cenchrus gracillimus | Sandhill Sandspur | Longleaf pinelands, other sandy habitats. | N. FL, s. and e. GA, s. AL; West Indies (Cuba, Jamaica). | 
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| Poaceae | Cenchrus latifolius | Uruguayan Fountaingrass | Spreading from horticultural use. | Native of South America. | 
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| Poaceae | Cenchrus longisetus | Feathertop | Cultivated as an ornamental, and sometimes escaped. | Native of W. Asia and ne. Africa. Reported as an introduction in GA (Kartesz 1999), apparently erroneously. | 
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| Poaceae | Cenchrus longispinus | Northern Sandspur, Common Sandspur | Fields, roadsides, disturbed areas, lawns. | ME west to OR, south to FL, TX, and CA. | 
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| Poaceae | Cenchrus myosuroides | Big Sandspur | Shell middens, maritime hammocks, coastal berms, roadsides, disturbed areas. | SC south to FL, west to TX; West Indies; Mexico to South America. | 
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| Poaceae | Cenchrus nervosus | | Disturbed areas. | Native of South America. | 
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| Poaceae | Cenchrus orientalis | Laurisa Grass, White Fountain Grass | Disturbed areas. | Native of s. Asia west to w. Asia and n. Africa. | 
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| Poaceae | Cenchrus pedicellatus | Kyasuma Grass, Hairy Fountain Grass | Citrus groves, other disturbed areas. | Native of tropical Africa and s. Asia. | 
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| Poaceae | Cenchrus purpurascens | Chinese Fountaingrass, Foxtail Fountaingrass | Disturbed areas, roadsides, floodplains, old fields. | Native of e. Asia. This species seems to be developing into an invasive species, with increasing reports of its spread into natural areas, as opposed to merely occurring as a waif following cultivation. Reported for DE and MD, where frequently encountered on roadsides (Longbottom, Naczi, & Knapp 2016). | 
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| Poaceae | Cenchrus purpureus | Elephant Grass, Napier Grass | Swamps, wet grasslands, disturbed areas. | Native of Africa. Naturalized in FL north to the FL-GA border, and in AL (Diamond & Woods 2009). | 
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| Poaceae | Cenchrus setaceus | Tender Fountaingrass | Disturbed areas. | Native of e. Mediterranean Europe. Reported as an introduction in FL, TN, and KY (Wipff in FNA 2003a). Well established in Florida, spreading widely from landscape plantings initially, but then moving at distance. | 
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| Poaceae | Cenchrus setiger | | Disturbed areas. | Native of Africa. Known in our area from ne. FL, ec. MS, and se. and s. TX. | 
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| Poaceae | Cenchrus setosus | Mission Grass | Pine flatwoods, moist disturbed pastures, and roadsides. | Native of tropical Africa. Considered invasive in our area. | 
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| Poaceae | Cenchrus spinifex | Coastal Sandspur, Grassbur | Fields, roadsides, disturbed areas. | VA south to FL, west to AR and KS; West Indies; Mexico to South America. | 
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| Poaceae | Cenchrus tribuloides | Dune Sandspur | Dunes, sandy fields, sandy woodlands in the outer Coastal Plain. | NY (Long Island) south to FL, west to TX; West Indies; e. South America. | 
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| Poaceae | Chasmanthium | Spanglegrass, Spikegrass | | | 
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| Poaceae | Chasmanthium latifolium | River Oats, Fish-on-a-Stringer, 'Inland Sea Oats' | Riverbanks, streambanks, bottomland forests, seepages and glades over mafic or calcareous rock, usually in nutrient-rich soils, also now cultivated widely as a native plant ornamental, but can be quite aggressive. | NJ, OH, IL, and KS south to ne. and Panhandle FL and TX. | 
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| Poaceae | Chasmanthium laxum | Slender Spikegrass | Savanna-pocosin ecotones, sandhill-pocosin ecotones, moist hardwood swamps, other moist habitats. | S. NY, KY, and OK south to s. FL and e. TX. | 
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| Poaceae | Chasmanthium nitidum | Shiny Spanglegrass | Blackwater swamp forests, especially with calcareous influence (over marl, oligohaline tidal swamps). | Se. NC south to s. FL and west to se. AL. | 
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| Poaceae | Chasmanthium ornithorhynchum | Birdbill Spikegrass | Blackwater swamp forests. | S. AL and w. FL Panhandle west to e. LA (Florida Parishes). Also reported for NC and SC (FNA 2003a; Kartesz 2020), apparently in error, as no evidence has been found to support a distribution in the Carolinas. | 
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| Poaceae | Chasmanthium sessiliflorum var. 1 | Coastal Hammock Longleaf Spikegrass | Calcareous hammocks. | E. SC south to n. FL. | 
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| Poaceae | Chasmanthium sessiliflorum var. sessiliflorum | Longleaf Spikegrass | Moist to dryish hardwood forests, swamps, other moist habitats. | Se. VA, n. TN, n. AR, and e. OK south to sc. peninsular FL and ec. TX. | 
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| Poaceae | Chloris | Finger-grass, Chloris | | | 
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| Poaceae | Chloris andropogonoides | Slimspike Windmill-grass | Prairies, brush, especially on clay soils; eastwards in lawns, pastures, roadsides. | C. and s. TX south into Mexico (CHH, COA, NLE, SLP, TAM). | 
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| Poaceae | Chloris barbata | Swollen Windmill-grass | Lower Rio Grande Valley; eastwards in disturbed areas, waste areas near wool-combing mills. | Native of either or both the New World Tropics (West Indies, e. Mexico, Central America, and South America) or the Old World tropics (Africa, s. Asia). | 
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| Poaceae | Chloris cucullata | Hooded Windmill-grass | Prairies, especially sandy or gravelly, also on roadsides and in disturbed areas, and eastwards (SC) in waste areas near wool-combing mills, other disturbed areas, such as historically on ballast (perhaps only a waif). | KS, NM, and AZ south into Mexico (CAM, COA, NLE, TAM, YUC). | 
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| Poaceae | Chloris divaricata | | Disturbed areas, including in waste areas near wool-combing mills, perhaps only a waif. | Native of Australia. | 
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| Poaceae | Chloris gayana | Rhodes Grass | Pastures (where planted for forage), disturbed areas, roadsides; eastwards in waste areas near wool-combing mills, other disturbed areas (perhaps only a waif). | Native of Africa. | 
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| Poaceae | Chloris pectinata | | Waif in disturbed areas, such as near wool-combing mills. | Native of Australia. | 
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| Poaceae | Chloris pilosa | | Disturbed areas. | Native of equatorial Africa. | |
| Poaceae | Chloris radiata | Plush Grass | Disturbed areas, agricultural fields, and tree farms. | Native of tropical America. | 
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| Poaceae | Chloris subdolichostachya | Shortspike Windmill-grass | Disturbed sandy areas. | South to Mexico (CHH, COA, NLE, TAM) | 
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| Poaceae | Chloris texensis | Texas Windmill-grass | Coastal prairies, in relatively bare areas in coastal prairie grassland remnants on sandy to sandy loam soils (Carr 2011). | Endemic to se. TX. | 
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| Poaceae | Chloris truncata | Stargrass, Black Windmill-grass | Pastures, waste areas near wool-combing mills, perhaps only a waif. | Native of Australia. Reported for Livingstone Parish, LA (Urbatsch 2013) | 
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| Poaceae | Chloris ventricosa | | Waste areas near wool-combing mills, perhaps only a waif. | Native of Australia. Also reported for VA (Hitchcock & Chase 1951; Kartesz 1999) | 
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| Poaceae | Chloris verticillata | Windmill-grass, Tumble Windmill-grass | Disturbed areas, bottomland fields. | IA, SD, WY south to n. AR, s. TX, NM, AZ, and n. Mexico (BCS, COA, NLE); scattered elsewhere as introductions or waifs. | 
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| Poaceae | Chloris virgata | Feather Windmill-grass, Feather Finger-grass, Showy Chloris | Roadsides, other disturbed areas. | Native of tropical America. | 
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| Poaceae | Chrysopogon | Goldbeard | | | 
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| Poaceae | Chrysopogon aciculatus | Golden Beardgrass, Mackie's Pest, Amorseco | Open disturbed areas. | Native of tropical Asia, Australia, and Polynesia. Reported for Miami-Dade County (Bradley [in prep.]). | 
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| Poaceae | Chrysopogon fulvus | Red Beardgrass | Pine flatwoods. | Native of s. Asia. Escaped from experimental cultivation in Gainesville, FL (Hall 2019). | 
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| Poaceae | Chrysopogon pauciflorus | Florida Goldbeard, Florida Rhaphis | Longleaf pine sandhills, pine flatwoods, disturbed sandy areas. | FL and Cuba; its occurrences in se. NC (at Carolina Beach State Park), in Horry County, SC (see Bradley et al. [in prep.]), and se. TX (Jefferson County; Kartesz 2022), are plausible either as native, disjunct occurrences or as introductions. | 
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| Poaceae | Chrysopogon zizanioides | Vetiver, Khus-Khus | Field edges; ditch banks, other disturbed areas. | Native of s. Asia. | 
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| Poaceae | Cinna | Woodreed | | | 
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| Poaceae | Cinna arundinacea | Common Woodreed, Sweet Woodreed | Bottomland forests, rocky bars in rivers, tidal freshwater marshes, other low, wet habitats. | NB and MN south to s. GA (Carter, Baker, & Morris 2009) and TX. | 
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| Poaceae | Cinna latifolia | Drooping Woodreed, Slender Woodreed | Northern hardwood and spruce-fir forests, wet cliff-bases at high elevations. | Circumboreal, occurring in n. Eurasia and n. North America, south in North America to w. NC, e. TN, n. IL, MN, UT, NM, and CA. | 
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| Poaceae | Coix | Job’s-tears | | | 
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| Poaceae | Coix lacryma-jobi | Job's-Tears | Disturbed areas, perhaps merely a waif. | Native of tropical Asia. Reported for se. PA (Rhoads & Block 2007), TN (Thieret in FNA 2003a), c. KY (Kartesz 2010), and s. NJ (Kartesz 1999; Kartesz 2010). | 
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| Poaceae | Coleataenia | | | | 
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| Poaceae | Coleataenia abscissa | Cutthroat Grass | Most frequent in pineland seepage slopes, moist flatwoods, and depressions, where often the dominant herbaceous plant; also occasionally in dry sandy sites. Most often associated with wet Pinus densa savannas and seepage slopes, where it is often the dominant ground-layer species. See Bridges and Orzell (1998) for more information about the community types of this species. | Endemic to central FL peninsula, also known from a few sites on the Atlantic Coastal Ridge. | 
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| Poaceae | Coleataenia anceps ssp. anceps | Beaked Panic Grass | Moist sandy woods, swamps, sloughs, roadsides, fields, waste places, often weedy. | NY (Long Island), NJ west to IL, south to FL and TX. | 
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| Poaceae | Coleataenia anceps ssp. rhizomata | Small Beaked Panic Grass | Moist to dry sandy or loamy pinelands, maritime forests, ditches. | E. MD south to s. FL, west to e. TX, on the Coastal Plain, and rarely inland. | 
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| Poaceae | Coleataenia longifolia ssp. combsii | Combs's Panic Grass | Pond shores, depression meadows, cypress savannas, marshes, low woods. | Scattered on the outer Coastal Plain from NS (LeBlond in Weakley et al. 2018a), se. MA, NJ, se. VA, se. NC, e. SC, e. GA, and FL, west to se. LA. | 
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| Poaceae | Coleataenia longifolia ssp. longifolia | Long-leaved Panic Grass | Wet sandy or peaty soils of bogs, pine savannas, pond shores, depression meadows. | NS, NH, MA, PA, and IN south to FL, west to TX. | 
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| Poaceae | Coleataenia pulchra | Tall Flat Panic Grass | Marshes, low woods, ditches, swamps, shores, meadows, beaver marshes. | CT and NY west to IN, south to GA, LA, and ne. TX. | 
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| Poaceae | Coleataenia rigidula ssp. condensa | Dense Panic Grass | Marshes, meadows, low woods, ditches, stream and pond shores, freshwater tidal shores. | Coastal Plain south from se. MA to FL, west to se. TX and AR; disjunct in the West Indies. | 
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| Poaceae | Coleataenia rigidula ssp. rigidula | Redtop Panic Grass | Wet sandy or peaty soils low woods, meadows, marshes, shores, swamps, ditches, often weedy. | ME and MI south to FL and TX; also in CA and BC; disjunct in Central America. | 
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| Poaceae | Coleataenia tenera | Southeastern Panic Grass | Limesink ponds, depression meadows, cypress savannas, wet pinelands and prairies, bogs. | Coastal Plain from se. NC to FL, west to e. TX; West Indies; Mexico and Central America. | 
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| Poaceae | Cortaderia | Pampasgrass | | | 
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| Poaceae | Cortaderia jubata | Purple Pampasgrass | Disturbed areas. | Native of South America. | 
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| Poaceae | Cortaderia selloana | Pampasgrass | Barrier island marsh edges, other disturbed areas. | Native of South America. This grass is a popular ornamental, sometimes escaping. | 
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| Poaceae | Corynephorus | | | | |
| Poaceae | Corynephorus canescens | Gray Club-awn Grass | Dunes, disturbed sandy soils. | Native of Europe. | 
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| Poaceae | Crypsis | Prickle Grass | | | 
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| Poaceae | Crypsis alopecuroides | Foxtail Pricklegrass | Disturbed areas, in our area a waif on ballast. | Native of Mediterranean Europe and w. Asia. | 
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| Poaceae | Crypsis schoenoides | Swamp Pricklegrass | Disturbed areas, ballast. | Native of Mediterranean Europe. | 
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| Poaceae | Ctenium | Toothache Grass | | | 
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| Poaceae | Ctenium aromaticum | Toothache Grass, Orange Grass, Wild Ginger | Wet pine savannas, pocosin-savanna ecotones, seepage bogs, sandhill-pocosin ecotones, sandhill seeps. | Southeastern Coastal Plain endemic: se. VA south to FL and west to LA and e. TX (Singhurst, Keith, & Holmes 2005). | 
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| Poaceae | Ctenium floridanum | Florida Toothache Grass | Dry pinelands, longleaf pine sandhills, upper ecotones of pineland pools. Like Ct. aromaticum, generally flowering only following fire. | A Southeastern Coastal Plain endemic: se. GA to ne. FL. | 
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| Poaceae | Cymbopogon | Lemon Grass | | | 
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| Poaceae | Cymbopogon citratus | Lemon Grass | Disturbed hammocks. | Native of s. Asia. | 
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| Poaceae | Cymbopogon flexuosus | Malabar Grass, Cochin Grass, East Indian Lemon Grass | Cultivated for essential oils, probably at least a waif. | Native of s. Asia. | 
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| Poaceae | Cymbopogon jwarancusa | Iwarancusa Grass, Oil Grass | Roadsides, old fields, other disturbed areas, persistent from cultivation. | Native of e. Asia. | 
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| Poaceae | Cymbopogon nardus | Citronella Grass, Nardgrass | Cultivated, escaped to disturbed areas. | Native of s. Asia. | 
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| Poaceae | Cynodon | Bermuda Grass | | | 
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| Poaceae | Cynodon aethiopicus | Star Grass; Ethiopian Dogtooth Grass | Cultivated for forage, rarely escaped. | Native of e. Africa. | 
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| Poaceae | Cynodon dactylon | Bermuda Grass, Scutch Grass | Lawns, gardens, roadsides, pastures, fields, disturbed areas. | Native of Eurasia. | 
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| Poaceae | Cynodon incompletus | Karrookweek Dogtooth Grass | Cultivated as a turf grass and escaping. | Native of south Africa. | |
| Poaceae | Cynodon nlemfuensis var. nlemfuensis | African Bermuda Grass | Pastures, disturbed areas, roadsides, marshes. | Native of Africa. | |
| Poaceae | Cynodon nlemfuensis var. robustus | African Bermuda Grass | Disturbed areas, pastures. | Native of e. and c. Africa. | |
| Poaceae | Cynodon plectostachyus | Star Grass | Cultivated as a pasture grass and escaped. | Native of tropical Africa. | |
| Poaceae | Cynosurus | Dogtail | | | 
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| Poaceae | Cynosurus cristatus | Crested Dogtail | Lawns, roadsides. | Native of Eurasia. | 
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| Poaceae | Cynosurus echinatus | Rough Dogtail, Bristly Dogtail | Lawns, roadsides. | Native of s. Europe. | 
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| Poaceae | Dactylis | Orchard Grass | | | 
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| Poaceae | Dactylis glomerata | Orchard Grass, Cock's-foot | Pastures, fields, woodland edges, roadsides. | Native of Eurasia. | 
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| Poaceae | Dactyloctenium | Crowfoot Grass | | | 
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| Poaceae | Dactyloctenium aegyptium | Crowfoot Grass, Egyptian Grass | Beach dunes, coastal strands, and other coastal areas, lawns, roadsides, disturbed areas. | Native of Old World tropics. | 
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| Poaceae | Dactyloctenium geminatum | Double Combgrass | Waif on ore piles. | Native of e. sub-Saharan Africa. | |
| Poaceae | Dactyloctenium radulans | Buttongrass | Waste areas at wool-combing mills, presumably only a waif. | Native of Australia. Collected repeatedly from 1957-1960 at the Santee Wool Combing Mill, Jamestown, Berkeley County, SC. | 
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| Poaceae | Danthonia | Oat-grass | | | 
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| Poaceae | Danthonia compressa | Mountain Oat-grass, Allegheny Flyback | Grassy balds, thin soils around rock outcrops, woodlands. | NS, QC and ON south to SC, GA, and AL. | 
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| Poaceae | Danthonia epilis | Bog Oat-grass | Peaty bogs in the Coastal Plain and Mountains, seeps around rock outcrops in the Piedmont and Mountains, granitic domes. | The range is apparently bogs in pinelands from NJ to SC, in mountain bogs and on granitic domes in NC, SC, and GA, in seepage in the Cumberland Plateau and Blue Ridge of TN and AL. | 
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| Poaceae | Danthonia sericea | Silky Oat-grass, Downy Danthonia | Dry woodlands, especially common in sandy soils in the Coastal Plain, dry oak, oak-pine, and pine forests in the Piedmont and low Mountains, and on dry acidic cliffs and rock outcrops, roadsides and woodland margins. | Primarily a Coastal Plain species northward, ranging from e. MA south to FL and west to LA. Reported for WV by Vanderhorst et al. (2013). | 
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| Poaceae | Danthonia spicata | Poverty Oat-grass, Moonshine Grass, 'Curly Dan' | Dry woodlands, rock outcrops, shale barrens. | NL (Newfoundland) and BC south to FL and NM. | 
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| Poaceae | Dasypyrum | | | | 
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| Poaceae | Dasypyrum villosum | Mosquito Grass | Disturbed areas, apparently a waif on ship's ballast. | Native of w. Asia. | 
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| Poaceae | Dendrocalamus | Giant Bamboo | | | |
| Poaceae | Dendrocalamus latiflorus | Giant Bamboo | | Native of e. Asia. Reported for Dare County, NC (Kartesz 2022). | 
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| Poaceae | Deschampsia | Hairgrass | | | 
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| Poaceae | Deschampsia bolanderi | Scribner's Grass | Disturbed areas. | Native of w. North America. The collection was made in March 2005 from Dauphin Island at Shell Mound Park, a Native American shell midden community; plants may have been introduced as a contaminant in birdseed (H. Horne, pers. comm., 2017). | 
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| Poaceae | Deschampsia cespitosa ssp. glauca | Tufted Hairgrass | Thin soil of rock outcrops or barrens over calcareous, mafic, and ultramafic rocks (such as serpentine, amphibolite, limestone, and dolostone), seepages. | NL to YT, south to NJ, PA, VA, w. NC, OH, IL, MN, AZ, and CA. D. cespitosa is a complex species, with a complicated polyploid and aneuploid series, variously subdivided (or not) by various taxonomists. As a whole, D. cespitosa is circumboreal, ranging south in North America to NJ, sw. NC, WV, c. KY, IL, MN, and AZ. Ssp. glauca is the most widespread American subspecies, and extends the farthest south. Other subspecies occur farther north and in Eurasia. | 
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| Poaceae | Deschampsia elongata | Slender Hairgrass | Waste areas near wool-combing mills, presumably only a waif. | Native of w. North America south to s. Mexico. | 
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| Poaceae | Diarrhena | Beakgrain, Twingrass | | | 
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