Synonyms
Hedyotis angulata Fosberg ex Shinners
Hedyotis stenophylla var. parviflora A.Gray
Hedyotis nigricans var. angulata (Fosberg) W.H.Lewis
Houstonia nigricans var. angulata (Fosberg) W.H.Lewis
Hedyotis nigricans var. parviflora (A.Gray) W.H.Lewis
Houstonia rupicola Greenm.