Houstonia nigricans (Lamarck) Fernald var. 1 .
Origin/Endemic status: Native
Synonymy: = Hedyotis nigricans (Lam.) Fosberg var. austrotexana – Turner (1995b), Turner (1997); < Houstonia nigricans (Lam.) Fernald var. nigricans – K4; < Stenaria nigricans (Lam.) Terrell var. nigricans – K3, K4, Terrell (2001)
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