Epiphytic herbs 5-8 cm. tall, the equitant leaves distichously arranged in the form of a broad fan, as in the genus. Leaves subfalcately ligular as seen in profile, obliquely acute, often shortly apiculate, coriaceous, 3.5-6.5 cm. long and 0.6-1.2 cm. wide, the blades articulated with the very short, conduplicate, persistent bases. Inflorescences 1 or 2 slender racemes up to about 9 cm. long, produced from the leaf axils, the rachis laterally compressed, narrowly winged, subglabrous to puberulent. Flowers rather large for the genus, deep green with a white basal callus, the short, angulate pedicels subtended by elliptic-ovate, acute bracts which have a strongly developed keel and minutely ciliate margins, the apices of the bracts shortly mucronate. Sepals spreading or reflexed, ovate to oblong-ovate, concave, about 4 mm. long and 2.5-3 mm. wide, the outer surfaces with a distinct central keel, terminating in a short mucro, the margins of the sepals ciliate or serrulate. Petals much broader than the sepals, obovate-cuneate to obovate-flabellate, about 6 mm. long and 8 mm. wide, the upper rounded margins minutely ciliate to serrulate. Lip panduriform, obscurely 3-lobed, about 1 cm. long and 0.5 cm. wide at the base, the broadly ovate to subcordate basal half adnate to the base of the column, the anterior margins converging in an elongate isthmus, the subflabellate apex rather abruptly dilated and truncate, with serrulate margins, the apical half of the lip usually porrect in natural position, the disk with a prominent fleshy, porrect, divergently 2-lobulate callus.
Home