Family | Scientific Name | Common Name | Habitat | Distribution | Image |
---|---|---|---|---|---|
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 | Sandhills, savannas, 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 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 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.). | |
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 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 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 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). | |
Poaceae | Aristida oligantha | Prairie Three-awn | Rock outcrops in thin soil, roadsides, fields, disturbed areas. | VT west to SD, south to FL and TX, scattered elsewhere as a weed. | |
Poaceae | Aristida palustris | Longleaf Three-awn | Wet pine savannas and flatwoods, limesink depressions. | Se. NC south to FL, west to TX; apparently disjunct on the Cumberland Plateau of KY. | |
Poaceae | Aristida patula | Tall Three-awn | Dry to moist sandy soils of pond margins, pine flatwoods, 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 var. 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 ramosissima | S-curve Three-awn | Pine flatwoods, dry upland soils. | OH, s. IN, s. IL, c. MO. se. KS south to Pamhandle FL (Bay County) (Wunderlin & Hansen 2011), nc. MS (Morris & MacDonald 2012), LA, and c. TX. | |
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 reports this species from NC, but the documentation is unknown to me. | |
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) | |
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 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. | ||
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. | Sw. United States to Guatemala. Allred (1986) reports the collection of this sw. North American species from a Soil Conservation Service test nursery in Chapel Hill, NC. | ||
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 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 purpurea var. purpurea | Purple Three-awn | Sandy or rocky soils. | KS and CA south to LA, TX, NM, AZ, CA, and Mexico. | |
Poaceae | Aristida purpurea var. wrightii | Wright's Three-awn | Calcareous soils. | OK, CO, s. UT, s. NV, and s. CA south to s. TX and Mexico. | |
Poaceae | Aristida ternipes var. ternipes | Spidergrass | S. FL, TX, NM, and AZ south through Mexico and Central America to n. South America; West Indies. Reported for s. FL (Monroe County). | ||
Poaceae | Aristida purpurea var. nealleyi | Nealley's Three-awn | Rocky slopes, woodlands and scrub. | KS and CA south to TX, NM, AZ, CA, and Mexico. | |
Poaceae | Aristida purpurea var. fendleriana | Rocky calcareous areas, prairies. | SD, MT, and CA south through OK, TX, NM, and AZ into Mexico. |
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