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. 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.