Knoxia sumatrensis (Retz.) DC. [ Knoxia corymbosa Willd.]
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Knoxia sumatrensis (Retz.) DC. [ Spermacoce sumatrensis Retz.] [Rubiaceae]
R. Wight, Ill. Ind. Bot., vol. 2 : t. 128 (1850) [Rungia]