(L.) Lindl., Edward's Bot. Reg. 10, t. 832. 1824
Epiphyte; pseudobulbs linear to oblong-elliptic, ca 14 cm long and 3.5 cm wide, flattened with sharp edges, 2 (3)-leaved, with 4-6 usually papery bracts at base. Petioles conduplicate; leaves ligular to elliptic-oblong, 16-27 cm long, 2.5-8 cm wide, symmetrical to strongly asymmetrical at apex. Inflorescences 1 or 2, unbranched, arching, 6-12-flowered, to 35 cm long, from lateral base of pseudobulb; sepals caudate-acuminate and spreading, light yellow-green, the longer lateral ones 12-30 cm long; petals similar to sepals but much shorter; lip oblong-lanceolate, acuminate at apex, free from column; sepals, petals, and lip similarly mottled with violet-purple near base, the basal part of lip with 2 short, erect teeth in front of 2 erect orange-tipped lamina. Fruits oblong-elliptic, to 7 cm long and 1.3 cm wide, ± acuminate on both ends, 5-ribbed. Croat 11780, 14628.
Apparently rare. Most plants in Panama were seen in flower in the early rainy season (May to August). The fruits may develop to mature size by August, but the time of dehiscence is unknown.
Widespread; Florida and Mexico to Venezuela, Brazil, and Bolivia; Greater Antilles. In Panama, known from tropical moist forest in the Canal Zone, Chiriqui, Los Santos, Panama, and Darién.
See Figs. 161 and 162.