| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Urticaceae | Pilea fontana | Blackfruit Clearweed, Lesser Clearweed | Swamp forests, freshwater marshes, tidal marshes, calcareous wetlands, sand bars. | E. Canada west to MN and ND, south to FL, IN, and NE; disjunct in n. AL. |  |
| Urticaceae | Pilea herniarioides | Caribbean Clearweed | Disturbed areas. | S. FL; West Indies; s. Mexico (CAM, GRO, ROO, VER, YUC) and Central America. | |
| Urticaceae | Pilea involucrata | Friendship-plant | Disturbed areas. | Native of the Neotropics. | |
| Urticaceae | Pilea microphylla | Rockweed, Artilleryweed | Marl prairies, hammocks, pine rocklands, old rock and brick walls, urban areas, hammocks, especially in thin soil over limestone. | FL (perhaps more widespread as a native in the Southeastern US than just FL); West Indies; Mexico, Central America, and South America. Although listed by RAB 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, SC and Savannah, GA. Native at least in FL, and perhaps further north, the original distribution unclear. |  |
| 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. | QC west to MN, south to FL, LA, and OK. Sometimes considered to also occur in e. Asia, or these populations separated as P. mongolica Weddell, the course followed here. Additional study is needed. |  |
| Urticaceae | Pilea trianthemoides | Artillery-plant | Used horticulturally, sometimes persisting or spreading. | Native of tropical America. |
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