Schlechter, Beih. Bot. Centralbl. 36, abt. 2:407.1918
E. laterale Rolfe
Small epiphyte, sometimes trailing; pseudobulbs slender, to 3.5 cm long, l-leaved; stems simple or branched. Leaves ligulate to elliptic-oblong, 5-10 cm long, 1.5-3 cm wide, obtuse to somewhat rounded and mucronate at apex, thick. Racemes arising from base of pseudobulb, several-flowered, to 12 cm long; bracts small; flowers greenish; sepals narrowly lanceolate, acute, fleshy, ca 1.2 cm long; petals as long as sepals, linear; lip trilobate, ca 7 mm long, deeply cordate at base, clawed, the claw adnate to the column for the length of the column. Fruits not seen. Shattuck 347.
Not seen recently on the island but to be expected. Seasonal behavior not determined. Shattuck 347 had fruits nearly mature in November.
Known only from Panama, principally from premontane wet forest in Chiriqui (Monte Lirio), Coclé (El Valle), and Panamá (headwaters of Rio Corso); known also from tropical moist forest in the Canal Zone and adjacent Panamá.