Comparison of leaf blades and fruits of O. acuminata (A L. Poveda et al. 3793, MO A1 from H.W. Churchill & G.C. de Nevers 4976 MO; immature fruit) O. scottmorii (B R. Callejas et al. 3440 MO B1–B2 from R. Callejas et al. 5789, MO) O. cyclobasis (C E. Narvaéz et al. 1072, MO C1–C2 from W.A. Palacios & M. Tirado 11318 MO) and O. vespertilio (D G. McPherson 13597, MO, juvenile leaf, D1 G. McPherson 12543, MO). Scale bars: leaves: 2 cm; fruits: 0.75 cm.