Dendrobium lituiflorum - Bent-Raceme Dendrobium

Bent-Raceme Dendrobium is an tree-dwelling orchid with stems pendulous, cylindric, 30-40 cm or longer, 7-10 mm in diameter, slightly fleshy, unbranched, with many nodes, internodes 3-3.5 cm. Leaves are narrowly oblong, 7.5-18 × 1.2-1.5 cm, leathery, base sheathing, tip long-pointed and slightly hooked on one side. Inflorescences are many, arising from old leafless stems, 1- or 2-flowered. Peduncle are nearly perpendicular to stem, 5-10 mm long. Flowers are spreading, purple, large, membranous. Inner surface of lip has a deep purple spot surrounded by a white circle. Dorsal sepal is oblong-lanceolate, about 35 × 7 mm, 7-veined, tip pointed. Lateral sepals are similar to dorsal sepal and equal in size, 7-veined, base slightly oblique. Petals are nearly elliptic, about 4 × 1.5 cm, 7-veined, margin entire, tip pointed. Lip is subobovate, shorter than petals, embracing column on both sides and trumpet-shaped below middle, adaxially densely barbellate, margin irregularly denticulate. Bent-Raceme Dendrobium is found in Eastern Himalayas, China, Myanamar, Thailand, Laos and Vietnam, at elevations around 300-1600 m.