怒江石豆兰 Bulbophyllum nujiangense

Rhizome stout， ca. 5 mm in diam.， creeping， densly with many root s. Pseudobulbs greatly reduced， relatively small compared to leaf， without  obvious difference with rhizome， 0.5 – 1.5 cm apart from  each other  along the rhizome. Leaf one on each pseudobulb， ca. 12-20 ×2-3.5 cm， erect， leathery， fleshy， oblong-elliptic， acute. Petiole 10-13 cm. Inflorescences arising from the node of rhizome， erect， ca. 25 cm， 2 - 3 tubular sheaths at base of scape， 1.2-2.5 cm long， one spathe-like involucre sheathing at lower-middle of scape， ca.1. 8 cm long， rachis ca. 8 cm long， pendulous， sparsely with flowers.Floral bracts 6-6.5×2-2.5 mm， elliptic to lanceolate， acuminate， longer than ovary and pedicel， appressed to ovary and dorsal sepal， 3-veined. Ovary and pedicel ca. 2.5 mm long， ovary obconical. Flowers and bracts deep purple， column green， dorsal sepal ca. 4.5×3.5 mm， fleshy， ovate-triangular，acuminate， 3-veined， lateral sepals ca. 4.5 ×3 mm，fleshy， obliquely ovate， apex obtuse or subacute， base lower edges slightly connate， 3-veined， petals ca. 2×1.2 mm， much smaller than sepals， thin texture， oblong， obtuse， mucronate at apex， 1-veined， lip ca. 3×2.5 mm， ovate， fleshy and thickened， lingulate，  densely  papillose  adaxially，  deflexed， deeply grooved abaxially， apex blunt， column stout， 0.6 mm， spreading， with a bidentate stelidium on each side， spreading， upper dentate much more developed than lower one， column foot ca. 2 mm long， anther cap nearly square， spreading， apex truncate， pollinia 4 in two pair， inner slightly less than 1 / 2 as large as outer， two smaller inner ones connate at base like a “V-shaped， rostellum obtuse， spreading. Fl. Nov. to January.