Houstonia nigricans var. papillacea (B.L.Turner) Allred variety synonym

Hedyotis nigricans var. scabra (S.Watson) Fosberg variety synonym

Hedyotis nigricans f. salina (A.Heller) W.H.Lewis form synonym

Hedyotis nigricans var. filifolia (Chapm.) Shinners variety synonym

Stenaria nigricans var. gypsophila (B.L.Turner) Terrell variety accepted

Hedyotis nigricans var. gypsophila B.L.Turner variety synonym

Hedyotis stenophylla Torr. & A.Gray species synonym

Hedyotis salina (A.Heller) Shinners species synonym

Oldenlandia angustifolia var. filifolia Chapm. variety synonym

Chamisme angustifolia (Michx.) Nieuwl. species synonym

Hedyotis lasiantha Nutt. ex A.Gray species synonym

Hedyotis nigricans var. papillacea B.L.Turner variety synonym

Hedyotis nigricans var. pulvinata (Small) Fosberg variety synonym

Hedyotis nigricans var. austrotexana B.L.Turner variety synonym

Stenaria nigricans var. floridana (Standl.) Terrell variety accepted

Hedyotis purpurea var. floridana (Standl.) Fosberg variety synonym

Hedyotis nigricans var. floridana (Standl.) Wunderlin variety synonym

Stenaria nigricans var. breviflora Terrell variety accepted

Stenaria nigricans var. nigricans variety accepted

Houstonia filifolia (Chapm.) Small species synonym

Houstonia angustifolia var. filifolia (Chapm.) A.Gray variety synonym

Houstonia angustifolia Michx. species heterotypic synonym

Houstonia nigricans var. pulvinata (Small) Terrell variety synonym

Houstonia angustifolia var. scabra S.Watson variety synonym

Houstonia pulvinata Small species synonym

Houstonia salina A.Heller species synonym

Houstonia tenuis Small species synonym

Houstonia nigricans var. floridana (Standl.) Terrell variety synonym

Houstonia floridana Standl. species synonym

Hedyotis fruticosa Walp. species heterotypic synonym

Hedyotis nigricans var. nigricans variety synonym

Hedyotis rupestris Walp. species heterotypic synonym

Oldenlandia angustifolia (Michx.) A.Gray species heterotypic synonym

Houstonia fruticosa Raf. ex A.Gray species heterotypic synonym

Houstonia fruticosa Raf. species homotypic synonym

Hedyotis lasiantha Nutt. species homotypic synonym