| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Urticaceae | Archiboehmeria | ||||
| Urticaceae | Archiboehmeria nivea var. nivea | Ramie | Disturbed suburban areas, waste ground. "In waste places, South Carolina and Florida and about the large cities in the Gulf States" (Small 1913a). | Native of Asia. Reported for Lowndes County, Georgia (Carter, Baker, & Morris 2009). Reported for Virginia based upon a (now rejected) specimen of B. cylindrica. |  (c) staff, PIHG Herbarium |
| Urticaceae | Boehmeria | Swamp-nettle |  (c) Fleming, Gary P. | ||
| Urticaceae | Boehmeria cylindrica | Swamp-nettle | Swamp forests, bottomland forests, bogs, tidal marshes, other marshes, other wetlands. | Québec and Minnesota south to Florida and New Mexico; West Indies; Mexico, Central America, and South America. |  (c) Fleming, Gary P. |
| Urticaceae | Cecropia | Cecropia |  (c) Bradley, Keith | ||
| Urticaceae | Cecropia pachystachya | Native of South America. South Florida plants in Miami-Dade and Broward counties previously identified to C. palmata are instead this species (J. Lange, pers. comm.; 2025). See https://www.inaturalist.org/observations/224259969 for more discussion. |  (c) Pontes, Victor Farjalla - CC-BY | ||
| Urticaceae | Laportea | Wood-nettle |  (c) Bradley, Keith | ||
| Urticaceae | Laportea aestuans | West Indian Wood-nettle | Waste ground and agricultural areas (e.g. tree farms). | Pretty regular in Miami, also reported for scattered sites in the se. US (Kartesz 2022). Native of the New World tropics and subtropics. |  (c) Bradley, Keith |
| Urticaceae | Laportea canadensis | Woodnettle | Moist, nutrient-rich forests, seepage swamps, especially abundant in cove forests in the Mountains and bottomlands in the Piedmont. By mid-summer, Laportea often becomes the aspect dominant in rich, moist cove forests of the mountains (especially those with extensive seepage), visually replacing the diverse spring flora. | Nova Scotia and se. Manitoba south to Panhandle Florida and Oklahoma. | (c) Bradley, Keith |
| Urticaceae | Parietaria | Pellitory |  (c) Bradley, Keith | ||
| Urticaceae | Parietaria floridana | Florida Pellitory | Coastal shores, sometimes weedy in calcareous situations or around greenhouses. | Delaware south to Florida and west to Texas, on the outer Coastal Plain; Bahamas; Mexico, Central America, and South America. Reported for c. Kentucky (Adanick & Medley 2020). | (c) Bradley, Keith |
| Urticaceae | Parietaria judaica | Pellitory-of-the-wall | Disturbed urban areas. | Native of Europe. Reports of P. officinalis in our area are based on P. judaica. Reported for Beaufort County, South Carolina (Bradley et al. [in prep.]). |  (c) Frade, Duarte - CC-BY |
| Urticaceae | Parietaria pensylvanica | Pennsylvania Pellitory, Rock Pellitory | In circumneutral soils, such as in thin soils at the bases of calcareous or subcalcareous cliffs or on calcareous shale barrens, rich floodplain soils. | Maine west to British Columbia, south to e. North Carolina, w. North Carolina, South Carolina (Gaddy 2014), Alabama, Panhandle Florida, Texas, Nevada, and Mexico (many states). |  (c) Gwaltney, John |
| Urticaceae | Parietaria praetermissa | Coastal Pellitory | Shell middens, coastal hammocks. | E. North Carolina south to s. Florida and west to w. Louisiana. |  (c) Davis, Scott Allen - CC-BY |
| Urticaceae | Pilea | Clearweed |  (c) Fleming, Gary P. | ||
| Urticaceae | Pilea fontana | Blackfruit Clearweed, Lesser Clearweed | Swamp forests, freshwater marshes, tidal marshes, calcareous wetlands, sand bars. | E. Canada west to Minnesota and North Dakota, south to Florida, Indiana, and Nebraska; disjunct in n. Alabama. The distribution as reported in various sources is odd and suggestive of "issues", taxonomic or identification. | (c) Fleming, Gary P. |
| Urticaceae | Pilea herniarioides | Caribbean Clearweed | Disturbed areas. | S. Florida; West Indies; s. Mexico (Campeche, Guerrero, Quintana Roo, Veracruz, Yucatán) and Central America to nw. South America. |  (c) Goldman, Douglas - CC-BY |
| Urticaceae | Pilea involucrata | Friendship-plant | Disturbed areas. | Native of the Neotropics. | |
| Urticaceae | Pilea microphylla var. microphylla | Rockweed, Artilleryweed | Marl prairies, hammocks, pine rocklands, old rock and brick walls, urban areas, hammocks, especially in thin soil over limestone. | Florida (perhaps more widespread as a native in the Southeastern US than just Florida); West Indies; Mexico, Central America, and South America. Although listed by Radford, Ahles, & Bell (1968) for the Carolinas as "a weed in and around greenhouses, not established as part of our flora", this species is well-established and weedy in Charleston, South Carolina and Savannah, Georgia. Native at least in Florida, and perhaps further north, the original distribution unclear. |  (c) Campos, Aidan |
| Urticaceae | Pilea nummulariifolia | Creeping Charlie | Used horticulturally as a ground cover, spreading and establishing near plantings. | Native of n. South America and the West Indies. | |
| Urticaceae | Pilea pumila | Greenfruit Clearweed, Coolwort, Richweed | Swamp forests, bottomlands, freshwater marshes, tidal marshes, disturbed wet ground. | Québec west to Minnesota, south to Florida, Louisiana, and Oklahoma. Sometimes considered to also occur in e. Asia, or these populations separated as P. mongolica Weddell, the course followed here. Additional study is needed. |  (c) Fleming, Gary P. |
| Urticaceae | Pilea trianthemoides | Artillery-plant | Used horticulturally, sometimes persisting or spreading. | Native of tropical America. | |
| Urticaceae | Pouzolzia | ||||
| Urticaceae | Pouzolzia zeylanica | Ceylon Pouzolzia, Mist Vine, Reek-kudzu | Swamps, bottomlands, disturbed areas. | Native of tropical se. and temperate e. Asia. | |
| Urticaceae | Rousselia | Rousselia | |||
| Urticaceae | Rousselia humilis | Rousselia | Lawns, disturbed areas. | Native of West Indies, Mexico, and Central America. | |
| Urticaceae | Urtica | Stinging Nettle, Ortie (fr) |  (c) Fleming, Gary P. | ||
| Urticaceae | Urtica ballotifolia | Waif on ore piles. | |||
| Urticaceae | Urtica chamaedryoides | Dwarf Stinging Nettle, Heartleaf Nettle, Ortiguilla | Rich moist soil, usually on floodplains. | West Virginia, Kentucky, se. Missouri and Oklahoma south to Florida, Texas, and s. Mexico; disjunct in South America (Argentina and Bolivia). This species is very rare east of the Blue Ridge; notable disjunct eastern locations include Stevens Creek (McCormick County, South Carolina), Congaree Swamp (Richland County, South Carolina), and various sites on very rich levees of the Roanoke River (North Carolina). |  (c) Bradley, Keith |
| Urticaceae | Urtica dioica ssp. dioica | European Stinging Nettle, Great Nettle | Bottomlands, roadsides, other disturbed areas, primarily in calcareous soils. | Native of Eurasia. |  (c) Lange, Peter de - CC0 |
| Urticaceae | Urtica gracilis ssp. gracilis | American Stinging Nettle | Bottomland forests and edges, particularly over limestone or mafic rocks. | Newfoundland and Labrador (Labrador) and Nova Scotia west to Alaska, south to sw. Virginia, w. North Carolina, s. Ohio, s. Illinois, s. Missouri, n. Texas, s. New Mexico, and se. Arizona. |  (c) Oldham, Michael J. - CC-BY-NC, permission granted to NCBG |
| Urticaceae | Urtica pilulifera | Roman Nettle | Waif at old seaport. | Native of Mediterranean Europe. |  (c) Kosterin, Oleg - CC-BY |
| Urticaceae | Urtica urens | Burning Nettle, Dog-nettle, Small Nettle | Disturbed areas. | Native of Eurasia. |  (c) Littlefield, Tara Rose - CC-BY-NC, permission granted to NCBG |
| Urticaceae | Urticaceae | Nettle Family |  (c) Fleming, Gary P. |