| sample img | Species |
|---|---|
|
|
Houstonia purpurea L. (1753) |
|
|
Houstonia acerosa (A.Gray) Benth. & Hook.f. (1873) |
|
|
Houstonia caerulea 278288-2 (1753) |
|
|
Houstonia canadensis Willd. (1818) |
| Houstonia correllii (W.H.Lewis) Terrell (1975) | |
| Houstonia croftiae Britton & Rusby (1887) | |
|
|
Houstonia humifusa (Engelm. ex A.Gray) A.Gray (1859) |
|
|
Houstonia longifolia Gaertn. (1788) |
|
|
Houstonia micrantha (Shinners) Terrell (1975) |
| Houstonia ouachitana (E.B.Sm.) Terrell (1988) | |
| Houstonia palmeri A.Gray (1882) | |
| Houstonia parviflora Holz. ex Greenm. (1897) | |
|
|
Houstonia procumbens (Walter ex J.F.Gmel.) Standl. (1918) |
|
|
Houstonia longifolia var. tenuifolia (Nutt.) Alph.Wood (1861) |
|
|
Houstonia pusilla Schoepf (1788) |
| Houstonia rosea (Raf.) Terrell (1986) | |
|
|
Houstonia rubra Cav. (1799) |
|
|
Houstonia serpyllifolia Michx. (1803) |
| Houstonia sharpii Terrell (1980) | |
| Houstonia spellenbergii (G.L.Nesom & Vorobik) Terrell (1991) | |
| Houstonia subviscosa (C.Wright ex A.Gray) A.Gray (1859) | |
|
|
Houstonia wrightii A.Gray (1882) |