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16 581893 Lagascea rigida (Cav.) Stuessy [117 702081 Nocca rigida Cav.]
F.H.A. von Humboldt, A. Bonpland, K.S. Kunth, Nov. Gen. Sp., vol. 4 : t. 311 (1820) [P.J.F. Turpin]
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