Cat. 5031 (1831–2) nom. nud.ex Munro, Trans. Linn. Soc. London 26: 92 (1868); Gamble, Ann. Roy. Bot. Gard. Calcutta 7: 32. (1896); Ohrnberger, Bamboos World: 271 (1999)
* Tight clumping, upright with weeping tops. Culms 10 – 12 m tall and 5 - 10 cm diameter, green, smooth, not shining, white-ringed below the nodes; node slightly thickened, often hairy, lower ones bearing rootlets; internodes usually 25-45 cm long, thick-walled. Culm-sheaths 10-23 cm long, upto 30 cm wide at base, with appressed scattered black hairs on the back, base with soft deciduous hairs, top truncate; adaxial surface clothed with appressed brownish black hairs. Young shoots yellowish-green at apex. Sheaths covered sparsely with dark-brown and yellow hairs. Leaves 15-25 cm long and 2-3.5 cm broad, linear-lanceolate, acuminate at apex, rounded and usually oblique at base, upper surface dull green, lower surface glaucous; petiole 3-5 mm long; leaf-sheaths hairy when young, striate; auricle falcate with few long hairs