Pendent or repent epiphytic herbs up to 1 m., or perhaps more, long. Stems slender, simple or usually branched, flexuose, bearing leaves toward the apex of the new growths, covered with the chartaceous leaf-sheaths, even when old. Leaves 2-12 cm. long and 0.15-0.4 cm. broad, linear, acute, flat or subterete. Inflores-cence a single flower borne at the apex of new growths. Flower small, yellowish. Sepals 11-15 mm. long and 2-3 mm. broad, linear-lanceolate, acute, margins revolute. Petals 11-13 mm. long and 1.2-1.5 mm. broad, elliptic-linear, acute. Lip unguiculate, claw adnate to the column; lamina 8-9 mm. long and 2-2.5 mm. broad, narrowly lanceolate, trulliform or canaliculate, fleshy, acute; disc provided with 2 short inconspicuous calluses at the base and with 1 sublamellate median callus extending from the base to about the middle of the lamina.
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