| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Eriocaulaceae | Eriocaulon aquaticum | Seven-angled Pipewort, Northern Pipewort | Ponds, natural lake shoreline marshes, floating peat mats, blackwater stream shores. | NB and NL (Newfoundland) west to ON and MN, south to e. NC, VA, and IN; also Great Britain and Ireland. |  (c) Fleming, Gary P. |
| Eriocaulaceae | Eriocaulon cinereum | Ashy Pipewort | Drawdown shores of manmade lake, other disturbed wetlands. | Native of Australasia. |  (c) Hsu, Cheng Te - CC-BY-SA |
| Eriocaulaceae | Eriocaulon compressum | Soft-headed Pipewort | Ponds, lakes, other depressions, wetter places in pine flatwoods and pine savannas, acidic seeps, Atlantic white cedar (Chamaecyparis thyoides) swamps. | NJ south to s. FL, west to e. TX. |  (c) Ward, Scott G |
| Eriocaulaceae | Eriocaulon decangulare var. decangulare | Common Ten-angled Pipewort | Wet pine savannas and pine flatwoods, bogs, mafic fens and seeps, seasonally flooded ponds, seepage bogs and swamps, wind-tidal marshes, sea-level fens. | NJ south to s. FL, west to sw. AR and e. TX; Mexico (CAM, MIC, TAB, VER), Central America. |  (c) Hill, Sonnia |
| Eriocaulaceae | Eriocaulon decangulare var. latifolium | Panhandle Pipewort | Seepage bogs. | Restricted to Panhandle FL, s. AL, and s. MS; disjunct in ne. FL. |  (c) Weakley, Alan |
| Eriocaulaceae | Eriocaulon koernickeanum | Dwarf Pipewort | This layers of sand and gravel or muck in seepage areas on sandstone, nepheline syenite, and prairie seeps (Interior Highlands and WGCP) or granite flatrocks (in GA), other seepages, bogs. | W. AR and e. OK south to e. TX; disjunct in c. GA. |  (c) Hill, Sonnia |
| Eriocaulaceae | Eriocaulon lineare | Depression pond and lakeshore margins, limesink ponds, wet flatwoods, seepage bogs. | Sw. GA south to c. peninsular FL, west to s. AL. |  © Floyd A. Griffith | |
| Eriocaulaceae | Eriocaulon nigrobracteatum | Dark-headed Hatpins | Seepage bogs. | Endemic to the FL Panhandle (Bay, Calhoun, and Gulf counties) |  © Floyd A. Griffith |
| Eriocaulaceae | Eriocaulon parkeri | Estuary Pipewort | Gravelly and sandy intertidal zones along fresh to oligohaline marshes, tidal swamp forests, less typically in natural lakes. | ME and QC south to ne. NC. |  (c) Fleming, Gary P. |
| Eriocaulaceae | Eriocaulon ravenelii | Calcareous wet pine flatwoods and prairies. | Ne. FL and e. Panhandle FL south to s. FL; disjunct (historically) in e. SC. |  (c) Horn, Jay | |
| Eriocaulaceae | Eriocaulon texense | Texas Hatpins | Sandhill seepage bogs, Altamaha Grit outcrops, seepage over the Catahoula in the West Gulf Coastal Plain, seepage over granite in the Blue Ridge Escarpment. | Sc. NC south to w. Panhandle FL, west to e. TX; disjunct in w. SC in the uppermost Piedmont in the Blue Ridge Escarpment region. |  (c) Ward, Scott G |