Rhabdocaulon denudatum (Benth.) Epling [ Keithia denudata Benth.]
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Rhabdocaulon denudatum (Benth.) Epling [ Keithia denudata Benth.] [Labiatae]
C.F.P. von Martius, A.G. Eichler, I. Urban, Fl. Bras., vol. 8(1): fasicle 22, (Labiatae; Scrophularinae; Gesneraceae): t. 34 (1858)