Arcytophyllum thymifolium (Ruiz & Pavon) Standl. [ Hedyotis thymifolia Ruiz & Pavon]
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Arcytophyllum thymifolium (Ruiz & Pavon) Standl. [ Hedyotis thymifolia Ruiz & Pavon] [Rubiaceae]
H. Ruiz, J. Pavón, Draw. Roy. Bot. Exped. Viceroy. Peru: t. 193 [88], fig. a (1777) [J. Rubio]