Flora of Barro Colorado Island

Stelis crescentiicola

Schlechter, Feddes Repert. 16:442.1920

Small, caespitose epiphyte; thickened pseudobulbs lack­ing; stems short, slender, bearing a single leaf. Blades oblanceolate, mostly rounded or emarginate at apex, attenuate at base, 3.5-10 cm long, 0.6-1.5 cm wide, gla­brous, coriaceous (prominently striate longitudinally when dried). Inflorescences densely flowered, terminal racemes 10-22 cm long; flowers pale violet-purple, per­sisting in fruit, minute (to 2.7 mm long); sepals ± ovate, acute or obtuse, to 1.3 mm long, papillate to minutely glandular; petals minute, much smaller than sepals, broader than long, held to either side of the minute tri­lobate lip. Fruits obliquely 3-sided, ± ellipsoid, 4-6 mm long, green. Croat 14938.

Apparently uncommon, though because of its habit in trees it is often overlooked. Flowers in the late dry season (April) and the early rainy season (May). The fruits develop by June.

In habit the plant is similar to Pleurothallis and may occur in the same places as P. brighamii and           P. grobyi. Costa Rica and Panama. In Panama, known from trop­ical moist forest in the Canal Zone, Panama, and Darién and from premontane wet forest and tropical wet forest in Colón (Santa Rita Ridge and Portobelo, respectively).