Pseudobulbs sparse, 3-5 cm apart on rhizome, oblong or narrowly ovoid, 7-13 × 2.5-5 cm, with 2 leaves at apex. Leaf blade suboblong, 14-27 × 4-5 cm, leathery; petiole 3-6.5 cm. Inflorescence hysteranthous, 15-21 cm, with imbricate, convolute, sheathing sterile bracts at interface between peduncle and rachis; raceme 7-12 cm, several to 10-flowered; floral bracts caducous. Flowers white, lip with yellow spots, lamellae tinged with red in apical part. Sepals oblong, 15-25 × 4-10 mm, acute; lateral sepals carinate abaxially. Petals narrowly oblong, 14-23 × 4-10 mm, acute; lip nearly ovate-oblong, ca. 22 mm, 3-lobed; mid-lobe irregularly undulate-dentate on margin; callus with 2 longitudinal lamellae extending from base to mid-lobe; lamellae crisped and slightly crenulate. Column slightly arcuate, ca. 14 mm, slightly expanded into a hood with small wings, notched at sides, front 3-lobed and margin irregular. Fl. Apr-Jun. 2n = 40, 44.
Epiphytic on trees along steep riverbanks in lower and upper montane forests; at elevations from 1,100-2,000 metres
Home