Arcytophyllum filiforme (Ruiz & Pavon) Standl. [ Hedyotis conferta Ruiz & Pavon]
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Arcytophyllum filiforme (Ruiz & Pavon) Standl. [ Hedyotis filiformis Ruiz & Pavon] [Rubiaceae]
H. Ruíz López, J.A. Pavon, Fl. Peruv., vol. 1(coloured version): (Plates 1-152): p. 57, t. 87, fig. a (1798)