Pupulin, F., H. Medina & D. Bogarín. 2011. Two Lepanthes (Orchidaceae: Pleurothallidinae) with strongly reduced corolla. OrchidsJ. 1(1): 31-35.

Abstract. Two new species of Lepanthes with strongly reduced corolla are described and illustrated. Lepanthes equus-frisiae from Ecuador is similar to the Colombian L. micellilabia, from which it can be distinguished by the free sepals, sparsely trichomatous at the base, transversely rheniform-suborbicular, rounded, concave petals and the subspherical, broadly obtuse lip. Lepanthes vestigialis from Costa Rica is distinguished by the small habit, the broadly-ovate, grey-green leaves, the elongate column up to 2 mm long, and the extremely reduced size of petals, its most remarkable character. The lip is completely reduced into an appendix and the petals are ovate to orbicular, trichomatous and very small.

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