Morphological characteristics: epiphyte, stem cloak-shaped, grooved, 28.0~35.0 cm long, 0.3~0.6 cm thick, leaves 2~4 near the tip of the aggregated branching stems. Leaf blade oblong-lanceolate, 4.0~8.0 cm long, 1.8~2.5 cm wide. inflorescence emanating from the leafless nodes of the stem, subcapitate, 1.5~2.0 cm long, with 4~6 flowers, flowers yellowish with dark stripes and spots. Sepals 3.0~4.0mm long; middle sepal broadly ovate-oblong, 6.0~6.5 mm long, 3.0~4.0mm wide; lateral sepals broadly triangular, 5.0~7.0mm long, 3.0~3.5mm wide, base connivent into a short calyx sac; petals oblong-ovate, 5.5~6.0 mm long, 2.5~3.5 mm wide; labellum 3-lobed, broadly ovate-oblong, 4.5~5.5 mm long 4.5 ~ 5.5 mm, 4.0 ~ 4.5 mm wide, lateral lobes triangular, erect, purplish red, middle lobe short, golden yellow; gynostegium and gynostegium foot 4.0 ~ 5.0 mm long.
Habitat: native to eastern and western Himalaya, Bangladesh, Assam, India, Nepal, Myanmar, Thailand. It grows on trees in forests at 600~2400m above sea level. Flowering period: June to August.