| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Cyperaceae | Fimbristylis annua | Annual Fimbry | Wet, disturbed areas, thin soils of rock outcrops; variously interpreted as entirely alien or partly native. | SE. PA, WV, s. IN, s. IL, MO, e. KS, south to n. peninsular FL, s. TX, s. AZ, and south through Mexico to Central and South America; West Indies; Eurasia, Africa, etc. |  |
| Cyperaceae | Fimbristylis autumnalis | Slender Fimbry | Moist to wet disturbed areas. | ME west to MN and SD and south to s. FL and TX; New World tropics. |  |
| Cyperaceae | Fimbristylis brevivaginata | Flatrock Fimbry | Pools and seepage over granite or sandstone. | Endemic to Piedmont of GA (on granite) and Cumberland Plateau of AL (on sandstone) (Kral 1992). |  |
| Cyperaceae | Fimbristylis caroliniana | Carolina Fimbry | Brackish or alkaline sands of marsh edges and dune swales, less typically in pine savannas or pine flatwoods. | NJ south to s. FL and west and south to TX; ne. and e. Mexico (OAX, SLP, TAM, VER); West Indies. |  |
| Cyperaceae | Fimbristylis castanea | Marsh Fimbry | Brackish marshes and dune swales. | NY (Long Island) south to s. TX and adjacent Mexico (TAM, VER); Yucatan peninsula of Mexico (ROO, YUC); West Indies. |  |
| Cyperaceae | Fimbristylis cymosa ssp. spathacea | Hurricane-grass | Beaches, dunes, marshes, mangroves, disturbed areas. | FL peninsula; West Indies, Mexico, Central America, and South America; also Old World tropics |  |
| Cyperaceae | Fimbristylis decipiens | Tricky Fimbry | Wet, disturbed areas. | E. NC south to n. FL and west to e. TX. |  |
| Cyperaceae | Fimbristylis dichotoma | Wet, disturbed areas. | Presumably introduced, probably native of Asia. The species is now pantropical and subtropical. |  | |
| Cyperaceae | Fimbristylis interior | Sandy prairies, woodlands. | NE south to TX and west to NM and AZ. | ||
| Cyperaceae | Fimbristylis littoralis | Disturbed wet ground. | Native of Asia. Kral (1971) suggests that it may have been introduced into se. United States early, in association with rice. In North America, now ranging from Central America and the West Indies north to NC, KY, and AR. Recently discovered in York County, VA (Z. Bradford, pers. comm., 2022). |  | |
| Cyperaceae | Fimbristylis perpusilla | Harper's Fimbry | Drawdown zones of natural depression ponds or exposed banks of blackwater or brownwater rivers. The species characteristically occurs on dry to moist banks exposed in summer by falling water levels, often with other diminutive annuals, such as Cyperus subsquarrosus, Edrastima uniflora, Juncus repens, Lindernia dubia, Eleocharis baldwinii, and Eragrostis hypnoides. At known locations it does not appear every year; presumably it is present in a seedbank which germinates only under favorable hydrologic (and other?) conditions. | The "range" consists of geographically scattered and "irregularly apparent" populations, usually on the drawdown zones of natural ponds or rivers, in the Coastal Plain from DE and e. MD south through e. VA, se. NC, and ne. SC, to sw. GA and AL, disjunct in the Cumberland Plateau of se. TN (Wofford & Jones 1988) and KY (Boone & Chester 2009). See Leonard (1981a, 1981b, 1987) for the first reports of the species in SC and NC and Diamond (2016b) for the first report in AL. |  |
| Cyperaceae | Fimbristylis puberula | Hairy Fimbry | Pine savannas, pine flatwoods, bogs, wet meadows or prairie-like areas, calcareous glades and barrens, granite outcrops. | Long Island, NY south to s. FL and west to TX, KS, and NE. |  |
| Cyperaceae | Fimbristylis schoenoides | Disturbed wetlands. | Native of Asia. Reported for sw. GA (Jones & Coile 1988) and also occurs in se. GA (B.A. Sorrie, pers. comm.). Also reported for Ocracoke Island, Hyde County, NC (Sorrie & LeBlond 2008). |  | |
| Cyperaceae | Fimbristylis squarrosa | Asian Fimbry | On ballast, apparently only a waif in our area (but FNA states "the weedy and often ruderal nature of the species makes it a likely future adventive". | Native of Old World tropics and subtropics. |  |
| Cyperaceae | Fimbristylis tomentosa | Wet, disturbed areas. | Presumably introduced, probably native of e. and se. Asia. Ranging north to NC and AR. |  | |
| Cyperaceae | Fimbristylis vahlii | Mudflats along rivers or reservoirs, also in sandy disturbed areas. | Primarily from MO south to MS and e. TX, but with scattered outliers as far away as NJ, NC, SC, IL, and KS; also in western United States, Mexico (COA, TAB, TAM, VER), Central America. |  |
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