| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Hypericaceae | Hypericum ×moserianum | Grown horticulturally, persistent or perhaps spreading. | An artificial hybrid, of horticultural origin. |  (c) Schönberg, Tobias - CC0 | |
| Hypericaceae | Hypericum adpressum | Bog St. John's-wort, Creeping St. John's-wort | Boggy depressions. | E. Massachusetts south to sw. Georgia in the Coastal Plain; disjunct inland in e. West Virginia (Greenbrier County), Indiana, Illinois, and sc. Tennessee. Records from the Kentucky Coastal Plain (Ballard and McCracken counties) were based on misidentified specimens (T. Littlefield, pers.comm., 2021). See discussion on its habitats and rarity in Sorrie (1998b). |  (c) Marcum, Paul |
| Hypericaceae | Hypericum androsaemum | Sweet-amber, Tutsan | Old fields, disturbed areas (commonly cultivated). | Native of Mediterranean Europe. Reported for e. Maryland (Longbottom, Naczi, & Knapp 2016). |  (c) Wilson, Chuck - CC0 |
| Hypericaceae | Hypericum apocynifolium | Mesic bluffs and ravines, ridges and natural levees in floodplains. | C. Georgia, s. Georgia, and Panhandle Florida west to se. Arkansas and e. Texas. |  (c) Witsell, Theo - CC-BY-NC, permission granted to NCBG | |
| Hypericaceae | Hypericum bartramium | American Great St. John's-wort | Swamps, bottomlands, wet meadows. | Québec west to Minnesota, south to s. Pennsylvania (Rhoads & Klein 1993; Rhoads & Block 2007), Maryland (Robson 2000; but excluded based on no specimen), and West Virginia (Harmon, Ford-Werntz, & Grafton 2006). |  (c) Kluge, Mark - CC-BY-NC, permission granted to NCBG |
| Hypericaceae | Hypericum boreale | Dwarf St. John's-wort, Northern St. John's-wort | Sinkhole ponds in the Mountains, interdune ponds in the outer Coastal Plain, boggy places. | Newfoundland and Labrador (Newfoundland) and Québec west to w. Ontario, south to Virginia, nw. North Carolina (?), Ohio, Indiana, and n. Illinois. |  (c) Fleming, Gary P. |
| Hypericaceae | Hypericum brachyphyllum | Ponds and wet pine flatwoods. | Se. South Carolina south to n. Florida, west to s. Mississippi and e. Louisiana. |  (c) Keim, Mary - CC-BY-NC-SA, permission granted to NCBG | |
| Hypericaceae | Hypericum buckleyi | Granite Dome St. John's-wort | Thin soil in seasonal seepage around rock outcrops, particularly granitic exfoliation domes. | Sw. North Carolina south to nw. South Carolina and ne. Georgia, a Southern Appalachian endemic. |  (c) Bradley, Keith |
| Hypericaceae | Hypericum calycinum | Aaron’s-beard | Disturbed areas, persistent and rarely naturalized from plantings. | Native of se. Europe and Asia Minor. Naturalized in Knox County, Tennessee (D. Estes, pers. comm., 2012). | |
| Hypericaceae | Hypericum canadense | Canada St. John's-wort | Bogs, pine savannas, ditches. | Newfoundland and Labrador (Newfoundland) and Québec west to Minnesota, south to s. Georgia, ne. Florida, Panhandle Florida, and Mississippi; also in Holland and Ireland, where considered by some (but not us) to be native. |  (c) Danielson, Erik |
| Hypericaceae | Hypericum chapmanii | Apalachicola St. John's-wort, Tree St. John's-wort | Margins of pond-cypress ponds, pond-cypress stringers, often growing with Cyrilla parvifolia and Nyssa ursina. | Endemic to Panhandle Florida (11 counties). |  © Bruce Sorrie |
| Hypericaceae | Hypericum cistifolium | Pine savannas, wet pine flatwoods. | E. North Carolina south to s. Florida, west to e. Texas. |  (c) Ward, Scott G | |
| Hypericaceae | Hypericum crux-andreae | St. Andrew's Cross, St. Peter's-wort | Pine flatwoods, pine savannas, bogs, seeps, mesic to dryish forests and woodlands. | New York (Long Island) and New Jersey south to s. Florida, west to e. Texas, primarily on the Coastal Plain, but scattered inland to w. North Carolina and n. Georgia, also north in the interior to c. Tennessee, s. Kentucky, c. Arkansas, and se. Oklahoma. |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Hypericaceae | Hypericum cumulicola | Highlands Scrub St. John’s-wort | Florida scrub. | Endemic to c. peninsular Florida (Highlands and Polk counties). |  (c) Bradley, Keith |
| Hypericaceae | Hypericum densiflorum | Mountain Bushy St. John's-wort | Bogs, streambanks, dry to moist forests, rock outcrops, moist forests, pine savannas. | Sw. Pennsylvania south to n. Georgia and c. Alabama in and near the Mountains; New York (Long Island) and New York (Long Island) and New Jersey south to South Carolina in the Coastal Plain; s. Georgia west to Alabama in the Coastal Plain. |  (c) Fleming, Gary P. |
| Hypericaceae | Hypericum denticulatum | Strict St. John's-wort | Wet pine savannas, wet pine flatwoods, adjacent ditches, borrow scrapes, blackwater stream shores. | Se. New York (Long Island) and s. New Jersey south to e. Georgia (McIntosh County) (Sorrie 1998b) on the Coastal Plain; disjunct inland in c. and w. North Carolina, sc. Tennessee, and in s. Alabama. |  (c) Sorrie, Bruce A. - CC-BY |
| Hypericaceae | Hypericum dissimulatum | Deceptive St.-John's-wort | Saturated sandy or peaty soils. | Maine, Québec, Ontario, and Wisconsin south to se. Virginia and e. Tennessee; disjunct in Arkansas (Saline County; J. Keesling, pers.comm., 2025). |  (c) Krieger, Mary - CC-BY |
| Hypericaceae | Hypericum dolabriforme | Glade St. John's-wort | Limestone glades and barrens. | In nw. Georgia (Jones & Coile 1988) and e. Tennessee (Chester, Wofford, & Kral 1997); this species should be sought in sw. Virginia. |  (c) Finzel, Brian - CC-BY-SA |
| Hypericaceae | Hypericum drummondii | Drummond's St. John's-wort, Nits-and-lice | Dry woodlands, woodland borders, fields. | Maryland west to Ohio, Illinois, and se. Kansas, south to Panhandle Florida and c. Texas. |  (c) Sorrie, Bruce A. - CC-BY |
| Hypericaceae | Hypericum edisonianum | Edison’s St. John’s-wort | Flatwoods ponds, Florida prairies, wet pine flatwoods. | Endemic to c. and s. peninsular Florida (Polk, Highlands, DeSoto, Glades, and Collier counties). |  (c) Bradley, Keith |
| Hypericaceae | Hypericum ellipticum | Pale St. John's-wort | Swamp forests, wet places along streams, wet meadows. | Newfoundland and Labrador (Newfoundland) and Nova Scotia west to w. Ontario, south to New York, Delaware, Michigan, and Minnesota, and in the mountains to West Virginia, North Carolina (?), and ne. Tennessee (Johnson County) (Chester, Wofford, & Kral 1997), and North Carolina (?). The documentation for Cronquist’s (1991) attribution of H. ellipticum to North Carolina is unknown. |  (c) Danielson, Erik |
| Hypericaceae | Hypericum erythreae | Georgia St. John's-wort, Sparse-leaved St. John’s-wort, Grit St. John’s-wort | Seepage bogs, roadside ditches. | Apparently nearly endemic to the Altamaha Grit region of the Georgia Coastal Plain, extending to Beaufort County, South Carolina (Allison 2011). See https://www.inaturalist.org/observations/89825586 for potential occurrence in Seminole County, Georgia. |  (c) Allison, James R. |
| Hypericaceae | Hypericum exile | Pine flatwoods. | Endemic to Panhandle Florida (Bay, Franklin, Gulf, Liberty, and Washington counties). |  (c) Weakley, Alan - CC-BY-NC, permission granted to NCBG | |
| Hypericaceae | Hypericum fasciculatum | Peelbark St. John's-wort | Wet pine savannas, beaver ponds, upland depression ponds. | E. North Carolina south to s. Florida, west to s. Mississippi and e. Louisiana; supposedly also in Cuba. |  (c) Bradley, Keith |
| Hypericaceae | Hypericum frondosum | Golden St. John's-wort, Cedar Glade St. John's-wort | Rock outcrops and rocky woodlands; also in dry disturbed areas. | S. Indiana and Kentucky south to Georgia, Alabama, and e. Mississippi; W. Louisiana and e. Texas. |  (c) Fleming, Gary P. |
| Hypericaceae | Hypericum galioides | Wet pine savannas, wet pine flatwoods, pools, edges of bottomlands. | Se. Virginia (Isle of Wight County) and e. North Carolina south to c. peninsular Florida, west to s. Arkansas and se. Texas. |  (c) Diamond, Alvin - CC-BY-NC, permission granted to NCBG | |
| Hypericaceae | Hypericum gentianoides | Pineweed, Orange-grass, Orangeweed | Fields, rock outcrops, woodland borders, eroding areas, pond margins, pine flatwoods. | Maine and Ontario west to Minnesota, south to s. Florida and Texas. |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Hypericaceae | Hypericum graveolens | Mountain St. John's-wort | Grassy balds, grassy openings, forests, at high elevations (1200 m or more). | Nw. North Carolina and ne. Tennessee south to sw. North Carolina, a Southern Appalachian endemic. |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Hypericaceae | Hypericum gymnanthum | Clasping-leaf St. John's-wort | Pine savannas, wet pine flatwoods, sinkhole ponds (Augusta and Rockingham counties, VA), other wet to moist habitats. | S. New Jersey south to ne. Florida, Panhandle Florida, west to c. Texas, and scattered inland in Pennsylvania, West Virginia, sc. Tennessee, Ohio, Indiana, Illinois, Missouri, and e. Kansas; also disjunct in Guatemala (introduced?). Added to the flora of Kentucky in 2013 by Martina Hines (Littlefield 2014). |  (c) Fleming, Gary P. |
| Hypericaceae | Hypericum harperi | Harper's St. John's-wort | Clay-based Carolina bays, other upland depression ponds, with Taxodium ascendens. | E. and c. South Carolina south to sw. Georgia and e. Panhandle Florida and se. Alabama. |  (c) Powell, Eric M - CC-BY-NC, permission granted to NCBG |
| Hypericaceae | Hypericum humifusum | Trailing St. John's-wort | Waif from horticultural use. | Native of w. Europe. |  (c) Krieger, Markus - CC-BY |
| Hypericaceae | Hypericum hypericoides | St. Andrew's Cross, Herbe à chien (frc) | Dry forests and woodlands. | New Jersey, w. Virginia, c. Kentucky, se. Missouri, and c. Oklahoma, south to s. Florida and e. Texas; West Indies; Mexico south to n. Central America; West Indies (Dominican Republic). |  (c) Fleming, Gary P. |
| Hypericaceae | Hypericum interior | Interior Bushy St. John's-wort | Rocky forests, riverbanks, seeps, especially over limestone or dolostone. | Sw. Virginia, e. and c. Tennessee, nw. Georgia south to c. Alabama. |  (c) Fleming, Gary P. |
| Hypericaceae | Hypericum limosum | Cuban St. John's-wort | Calcareous savannas and flatwoods. | Peninsular Florida; w. Cuba. |  (c) Ward, Scott G |
| Hypericaceae | Hypericum lissophloeus | Margins of sinkhole ponds. | Endemic to Panhandle Florida (Bay and Washington counties). |  © Lilly Anderson-Messec | |
| Hypericaceae | Hypericum lloydii | Lloyd's St. John's-wort | Dry woodlands, longleaf pine sandhills, edges of granitic flatrocks, edges of Altamaha Grit outcrops, roadbanks. | Sc. Virginia (Sorrie & LeBlond 2008) south to c. Alabama, mainly in the lower Piedmont and upper Coastal Plain. |  (c) Bradley, Keith |
| Hypericaceae | Hypericum lobocarpum | Five-lobe St. John’s-wort | Mesic prairies, pine flatwoods, stream banks, river scour; also roadsides and ditches through these habitats. | C. Kentucky, c. Tennessee (Chester, Wofford, & Kral 1997) and s. Mississippi west to s. Illinois, se. Oklahoma, and e. Texas. Credited to South Carolina by Robson (1996), based on specimens debated and dismissed by Adams (1973). The basis for attribution of H. lobocarpum to "Blue Ridge, N.C." by Small (1933) is unknown. |  (c) Hill, Sonnia |
| Hypericaceae | Hypericum majus | Wet meadows and shores. | Newfoundland and Labrador (Newfoundland) west to British Columbia, south to s. New Jersey, n. Delaware, nw. Pennsylvania (Rhoads & Block 2007), Ohio, Indiana, Illinois, Missouri, Oklahoma, Colorado, and Oregon (Kartesz 1999). |  (c) Danielson, Erik | |
| Hypericaceae | Hypericum microsepalum | Flatwoods St. John’s-wort | Moist to wet pine flatwoods. | S. Georgia and se. Alabama (Houston County) south to Panhandle Florida. |  © Scott Ward |
| Hypericaceae | Hypericum mitchellianum | Blue Ridge St. John’s-wort | Grassy balds, grassy openings, forests, seepages, at moderate to high elevations (generally at 1000-1900 m or more). | W. Virginia, e. West Virginia, and e. Tennessee south to sw. North Carolina, a Southern Appalachian endemic. |  (c) Finzel, Brian - CC-BY-SA |
| Hypericaceae | Hypericum mutilum var. latisepalum | Southern Dwarf St. John’s-wort | Marshes and other wet habitats. | Se. South Carolina south to s. Florida, west to Texas. Fernald (1950) considers this taxon to be north to New Jersey. |  (c) Weakley, Alan |
| Hypericaceae | Hypericum mutilum var. mutilum | Common Dwarf St. John’s-wort | Bogs, fens, marshes, shores, other wet habitats. | Newfoundland and Labrador (Newfoundland) and Québec west to Manitoba, south to s. Florida and c. Texas; scattered (probably as an adventive) farther west in North America, and in Mexico, Central and South America, and Europe. |  (c) Michael J., Papay - CC-BY |
| Hypericaceae | Hypericum myrtifolium | Myrtle-leaf St. John’s-wort | Ponds. | Se. South Carolina south to s. Florida, west to se. Mississippi, a Southeastern Coastal Plain endemic. Small (1933) reported this species from South Carolina; this distribution is now documented by a specimen from Jasper Co., South Carolina (P. McMillan, pers. comm.). |  (c) Ward, Scott G |
| Hypericaceae | Hypericum nitidum | Usually in flowing water of blackwater streams. | C. South Carolina south to Panhandle Florida, west to sw. Alabama; Cuba; Belize. |  © Samuel Mwenda | |
| Hypericaceae | Hypericum nudiflorum | Streambanks, moist forests, swamps, wet coastal prairies. | Se. Virginia south to Panhandle Florida, west to the Mississippi River. Plants formerly called H. nudiflorum west of the MS river (at least in AR) have been determined instead to be H. apocynifolium (T. Witsell, pers. comm.; 2025). |  (c) Diamond, Alvin - CC-BY-NC, permission granted to NCBG | |
| Hypericaceae | Hypericum paucifolium | Few-flowered St. John's-wort | Dry prairies on sand. | Se. Texas south to ne. Mexico. |  (c) Brush, John - CC-BY-NC |
| Hypericaceae | Hypericum perforatum ssp. perforatum | European St. John’s-wort, Klamath-weed | Fields, pastures, roadsides, woodland borders. | Native of Eurasia. See Duncan (1985) for documentation for Georgia. |  (c) Danielson, Erik |
| Hypericaceae | Hypericum prolificum | Shrubby St. John’s-wort | Bogs, seepages, dry rocky forests, rock outcrops, riverside prairies. | New York west to s. Michigan and Minnesota, south to Georgia, Louisiana, and e. Texas. |  (c) Hartley, Nate - CC-BY-NC, permission granted to NCBG |
| Hypericaceae | Hypericum pseudomaculatum | Large Spotted St. John’s-wort | Wet, moist, or dry forests and fields. | South Carolina south to Panhandle Florida, west to Texas, north in the interior to e. Tennessee (?), c. Illinois, s. Missouri, and c. Oklahoma. {records east of the Ozarks need to be studied more carefully} |  (c) Witsell, Theo - CC-BY-NC, permission granted to NCBG |
| Hypericaceae | Hypericum punctatum | Spotted St. John's-wort | Fields, woodland borders. | Québec west to Minnesota, south to c. peninsular Florida and e. Texas. |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Hypericaceae | Hypericum radfordiorum | Radfords' St. John's-wort, Brushy Mountain St. John’s-wort | Shallow circumneutral soil mats of granitic domes in the Brushy Mountains. | Endemic to the Brushy Mountains of Alexander and Wilkes counties, North Carolina. |  (c) Weakley, Alan |
| Hypericaceae | Hypericum setosum | Hairy St. John’s-wort | Pine savannas, wet pine flatwoods, boggy areas, adjacent ditches, fireplow lines, and scrapes. | Se. Virginia south to c. peninsular Florida, west to se. Texas. |  (c) Cressler, Alan M. |
| Hypericaceae | Hypericum species 2 | Wet loamy longleaf pine savannas. | Endemic to wet pine savannas in the outer Coastal Plain of North Carolina. | ||
| Hypericaceae | Hypericum sphaerocarpum | Barrens St. John's-wort, Roundfruit St. John's-wort | Limestone glades and barrens, prairies. | C. Ohio, s. Michigan, s. Wisconsin, Iowa, and se. Nebraska south through Kentucky, e. and c. Tennessee (Chester, Wofford, & Kral 1997), to nw. Georgia (GAHP 2003), c. Alabama, c. Mississippi, Louisiana, and ne. Texas; also reported for sw. Pennsylvania, where considered adventive (Rhoads & Klein 1993). |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Hypericaceae | Hypericum stragulum | Low St. John’s-wort, Straggling St. John’s-wort | Dry rocky or sandy woodlands. | Massachusetts (Nantucket Island), New York (Long Island), west to s. Pennsylvania, s. Ohio, s. Indiana, s. Illinois, c. Missouri, se. Kansas, and c. Oklahoma, south to ne. North Carolina, c. South Carolina, c. Georgia, n. Alabama, n. Mississippi, n. Louisiana, and c. Texas. |  (c) Fleming, Gary P. |
| Hypericaceae | Hypericum suffruticosum | Pineland St. John's-wort | Pine savannas and flatwoods. | Se. North Carolina south to c. peninsular Florida, west to se. Louisiana. |  (c) Ward, Scott G |
| Hypericaceae | Hypericum tenuifolium | Sandhill St. John's-wort | Pine flatwoods, pine savannas, longleaf pine sandhills. | Se. North Carolina south to s. peninsular Florida; Panhandle Florida and se. Alabama. |  (c) Ward, Scott G |
| Hypericaceae | Hypericum tetrapetalum | Wet pinelands and in depressional wetlands (open or dominated by Taxodium ascendens). | E. Georgia (within a few counties of se. South Carolina), south to s. Florida, west to Panhandle Florida; Cuba. Reports from South Carolina are based on misidentifications (K. Bradley, pers.comm., 2021). |  (c) Ward, Scott G | |
| Hypericaceae | Hypericum virgatum | Coppery St. John’s-wort | Hardpan woodlands, rock outcrops, woodland borders, glades and barrens (especially over mafic or ultramafic rocks). | Maryland west to s. Ohio, s. Indiana, and s. Illinois, south to c. North Carolina, c. South Carolina, sw. Georgia, Panhandle Florida, s. Mississippi, and se. Louisiana. |  (c) Bradley, Keith |