Template:Ballard, Wetter & Zamora, 1997

• Ballard, Jr., H.E., Wetter, M.A. & Zamora, N. 1997. Two New Species of Hybanthus (Violaceae) from Central America and a Regional Key for the Genus. Novon 7(3): 221–226. DOI: 10.2307/3391930 BHL ResearchGate  
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