景东厚唇兰 jing dong hou chun lan

Dendrobium fuscescens Griffith, Not. Pl. Asiat. 3: 308. 1851; Bulbophyllum fuscescens (Griffith) H. G. Reichenbach; Callista fuscescens (Griffith) Kuntze; Katherinea fuscescens (Griffith) A. D. Hawkes; Sarcopodium fuscescens (Griffith) Lindley.

Rhizome ca. 4 mm in diam., often branching, densely covered with tubular sheaths. Pseudobulbs borne 4-6 cm apart from one another, narrowly ovoid, slightly curved, ca. 25 × 5 mm, 2(or 3)-leaved, covered with 2 or 3 chestnut sheaths. Leaf blade oblong, 3-6.5 × 1-1.9 cm, leathery, base subsessile or with a short petiole, apex ± obtuse and slightly emarginate. Inflorescence 1-flowered; peduncle ca. 1 cm, base covered with sheaths; floral bracts much shorter than pedicel and ovary. Flowers pale brown; pedicel and ovary ca. 3 cm. Dorsal sepal ovate-lanceolate, 17-20 × ca. 5 mm, long acuminate; lateral sepals falcate-lanceolate, 21-24 × 5-10 mm, acuminate-caudate. Petals narrowly oblong or linear, 25-30 × 2.5-3 mm, acuminate-caudate; lip ovate-oblong in outline, ca. 15 mm, 3-lobed; lateral lobes erect, suboblong; mid-lobe elliptic, ca. 12 × 6 mm, often hooked aristate; disk with 3 lamellae, median shorter. Column ca. 7 mm, foot ca. 9 mm. Fl. Oct.

Lithophytic on damp rocks along valleys; 1300-2300 m. S Guangxi, SE Xizang, S and W Yunnan [Bhutan, NE India, Nepal].