形態特徵

• Culms very large, erect, 20-30 m tall, 20-30 cm in diam.; nodes not prominent; internodes 30-45 cm long; walls 1-3 cm thick; branches numerous at each node.
• Sheath of culm large, light purple when young, with dark brown hairs outside, margins entire; auricles of sheath conspicuous, somewhat reflexed, later caducous; ligule of sheath very conspicuous, 6-12 mm high, toothed with short hairs along margins; blade of sheaths ovate-lanceolate, reflexed. Leaves 5-15, oblong-lanceolate, 15-45 cm long, 3-6 m broad, veins 8-16, veinlets ca. 6, subtessellate, sharply spinulose-scabrous along margins; petiole 0.5-1 cm long; auricles of leaf inconspicuous; ligule of leaf convex, 3 mm high, irregularly toothed; sheath of leaf glabrous outside.
• Spikelets in clusters of 4-12 at nodes of leafless branches, 1.2-1.5 cm long, 3-4 mm in diam., 4-8-flowered; glumes 2; lemma broadly ovate, 9.5 mm long, 10 mm wide, veins ca. 25, margin hairy; palea 9 mm long, 2.5 mm wide, veins 2 between keel and 1 between each keel and edge, densely hairy on keels; gyneocium 10 mm long; ovary ovoid, hairy; style long, ending in a purple feathery stigma; stamens 6, anthers 6.5 mm long with pointed tip; lodicule absent.
• Fruit oblong, 7-8 mm long, obtuse, hairy above.

分布

• 台灣 : Introduced into Taiwan from Madagascar; planted in Taipei, Taichung, Nantou, Chiayi and Kaohsiung; an important economic bamboo for industrial purposes and for its edible shoots.
• 世界 : Native of India, Myanmar, and Thailand.

引證標本

KAOHSIUNG: Liukuei, Lin s. n. 1969.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 619. 2000.  (Fl. Taiwan 2nd edit.)