Family: Rubiaceae

Genus: Houstonia

Species:

Houstonia greenei (A. Gray) Terrell
Houstonia fasciculata A. Gray, non Bertol.
Houstonia acerosa (A. Gray) A. Gray ex Benth. & Hook. f.
Houstonia acerosa (A. Gray) A. Gray ex Benth. & Hook. f. var. acerosa
Houstonia acerosa (A. Gray) A. Gray ex Benth. & Hook. f. var. polypremoides (A. Gray) Terrell
Houstonia acerosa (A. Gray) A. Gray ex Benth. & Hook. f. ssp. polypremoides (A. Gray) Terrell
Houstonia polypremoides A. Gray
Houstonia polypremoides A. Gray var. bigelovii Greenm.
Houstonia caerulea L.
Houstonia caerulea L. var. faxonorum Pease & A.H. Moore
Houstonia canadensis Willd. ex Roem. & Schult.
Houstonia canadensis Willd. ex Roem. & Schult. var. setiscaphia (L.G. Carr) C.F. Reed
Houstonia ciliolata Torr.
Houstonia setiscaphia L.G. Carr
Houstonia correllii (W.H. Lewis) Terrell
Houstonia croftiae Britton & Rusby
Houstonia humifusa (A. Gray) A. Gray
Houstonia longifolia Gaertn.
Houstonia longifolia Gaertn. var. compacta Terrell
Houstonia longifolia Gaertn. var. glabra Terrell
Houstonia longifolia Gaertn. var. tenuifolia (Nutt.) Alph. Wood
Houstonia purpurea L. var. tenuifolia (Nutt.) A. Gray
Houstonia tenuifolia Nutt.
Houstonia micrantha (Shinners) Terrell
Houstonia ouachitana (E.B. Sm.) Terrell
Houstonia parviflora Holz. ex Greenm.
Houstonia procumbens (Walter ex J.F. Gmel.) Standl.
Houstonia rotundifolia Michx.
Houstonia purpurea L.
Houstonia purpurea L. var. calycosa A. Gray
Houstonia calycosa (A. Gray) C. Mohr
Houstonia lanceolata (Poir.) Britton
Houstonia purpurea L. var. montana (Small) Terrell
Houstonia montana Small
Houstonia purpurea L. var. purpurea
Houstonia purpurea L. var. pubescens Britton
Houstonia pusilla Schoepf
Houstonia minima Beck
Houstonia patens Elliot
Houstonia rosea (Raf.) Terrell
Houstonia pygmaea C.H. Mull. & M.T. Mull.
Houstonia rubra Cav.
Houstonia serpyllifolia Michx.
Houstonia subviscosa (C. Wright ex A. Gray) A. Gray
Houstonia wrightii A. Gray
Houstonia butterwickiae Terrell
Houstonia mullerae (Fosberg) Terrell
Houstonia floridana Standl.
Houstonia nigricans (Lam.) Fernald var. floridana (Standl.) Terrell
Houstonia angustifolia Michx.
Houstonia angustifolia Michx. var. filifolia (Chapm.) A. Gray
Houstonia angustifolia Michx. var. rigidiuscula A. Gray
Houstonia filifolia (Chapm.) Small
Houstonia nigricans (Lam.) Fernald
Houstonia nigricans (Lam.) Fernald var. pulvinata (Small) Terrell
Houstonia pulvinata Small
Houstonia rigidiuscula (A. Gray) Woot. & Standl.
Houstonia salina A. Heller
Houstonia tenuis Small
Houstonia rupicola Greenm.

Index

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