| Common Name | Scientific Name | Code |
| ashy pipewort | Eriocaulon cinereum R. Br. | ERCI4 |
| Bentham's pipewort | Eriocaulon benthamii Kunth | ERBE11 |
| blackbract pipewort | Eriocaulon nigrobracteatum Bridges & Orzell | ERNI7 |
| bogbutton | Lachnocaulon Kunth | LACHN |
| Engler's bogbutton | Lachnocaulon engleri Ruhl. | LAEN |
| Eriocaulon aquaticum | Eriocaulon pellucidum Michx. | ERPE13 |
| Eriocaulon aquaticum | Eriocaulon septangulare Withering | ERSE4 |
| Eriocaulon compressum | Eriocaulon compressum Lam. var. harperi Moldenke | ERCOH |
| Eriocaulon decangulare var. decangulare | Eriocaulon decangulare L. var. minor Moldenke | ERDEM4 |
| Eriocaulon lineare | Eriocaulon lineare Small var. gigas Moldenke | ERLIG |
| Eriocaulon parkeri | Eriocaulon rollandii Rouss. | ERRO11 |
| Eriocaulon parkeri | Eriocaulon septangulare Withering var. parkeri (B.L. Robins.) Boivin & J. Cayouette | ERSEP |
| estuary pipewort | Eriocaulon parkeri B.L. Robins. | ERPA4 |
| flattened pipewort | Eriocaulon compressum Lam. | ERCO7 |
| gulf pipewort | Eriocaulon koernickianum van Heurck & Muell.-Arg. | ERKO |
| Lachnocaulon anceps | Eriocaulon anceps Walt. | ERAN9 |
| Lachnocaulon anceps | Lachnocaulon floridanum Small | LAFL6 |
| Lachnocaulon anceps | Lachnocaulon glabrum Koern. | LAGL10 |
| Lachnocaulon engleri | Lachnocaulon engleri Ruhl. var. caulescens Moldenke | LAENC |
| Lachnocaulon minus | Lachnocaulon eciliatum Small | LAEC2 |
| narrow pipewort | Eriocaulon lineare Small | ERLI3 |
| pineland bogbutton | Lachnocaulon digynum Koern. | LADI5 |
| pipewort | Eriocaulon L. | ERIOC |
| pipewort | Eriocaulon longifolium Nees ex Kunth | ERLO7 |
| Ravenel's pipewort | Eriocaulon ravenelii Chapman | ERRA7 |
| rough pipewort | Eriocaulon scariosum Sm. | ERSC13 |
| sevenangle pipewort | Eriocaulon aquaticum (Hill) Druce | ERAQ2 |
| Small's bogbutton | Lachnocaulon minus (Chapman) Small | LAMI3 |
| smallhead pipewort | Eriocaulon microcephalum Kunth | ERMI7 |
| southern bogbutton | Lachnocaulon beyrichianum Sporleder ex Koern. | LABE |
| syngonanthus | Syngonanthus Ruhl. | SYNGO2 |
| Syngonanthus flavidulus | Eriocaulon flavidulus Michx. | ERFL13 |
| tenangle pipewort | Eriocaulon decangulare L. | ERDE5 |
| tenangle pipewort | Eriocaulon decangulare L. var. decangulare | ERDED2 |
| tenangle pipewort | Eriocaulon decangulare L. var. latifolium Chapman | ERDEL |
| Texas pipewort | Eriocaulon texense Koern. | ERTE8 |
| whitehead bogbutton | Lachnocaulon anceps (Walt.) Morong | LAAN |
| yellow hatpins | Syngonanthus flavidulus (Michx.) Ruhl. | SYFL |