N. panamensis Ames Epiphyte; pseudobulbs ca 2 cm long and 1 cm wide, partially enveloped in papery imbricating bracts, the bracts soon weathering away. Petioles conduplicate, very short; blades solitary at apex of pseudobulb, oblong-lanceolate, obtuse and unequally bilobed at apex, to 15 cm long and 3.5 cm wide, coriaceous. Racemes pendulous, from base of current pseudobulb, densely flowered, to 20 cm long; flowers white; pedicels slender, subtended by scarious, narrowly triangular, acuminate bracts; sepals subequal, the dorsal sepal broadly elliptic-oblanceolate, obtuse, concave, ca 7 mm long, 5 mm wide, the lateral sepals fused, the united segments linear-lanceolate, to 8 mm long, 2 mm wide; petals elliptic-lanceolate, acute, equaling sepals; lip ca 6 mm long, clawed, obliquely inserted at base of column, the blade sagittate, ca 3 mm wide, with a short-keeled callus; column slender, terete, ca 3 mm long. Fruits not seen. Dressler 2908 (US). Apparently rare. The Dressler collection was flowering in June.