S. Wats., Proc. Amer. Acad. Arts 23:285.1888
P. acrisepalaAmes & Schweinf.
Caespitose epiphyte; pseudobulbs lacking; stemsvery short, each bearing a single leaf. Leaves ± oblanceolate,obtuse or acute, 1.5-9 cm long, the veins obscure except themidrib, the base ensheathed in slender, scarious bracts. Flowers 1to few in terminal fascicles borne on slender peduncles usuallyabove the leaves; peduncles usually persisting; sepals acute,maroon, fused at base, 7-9 mm long, the lateral sepals united tothe middle or beyond; petals 2-3.5 mm long, solid maroon, the apexpointed; lip narrow, 2-4 mm long, l-2 mm wide, lighter andpapillate at apex, the margin ciliate, auriculate on both sides.Fruits ellipsoid, to 1 cm long, green or olive, tinged or stripedwith purple. Croat 9787.
Abundant in the forest, perhaps the most abundant orchid on theisland; growing high or low in trees. Apparently flowersrepeatedly throughout much of the year.
Guatemala to Panama. In Panama, known from tropical moistforest on both slopes of the Canal Zone and in Bocas del Toro,Colón, Panama, and Darién.