| English Name | Woon-young Bamboo |
|---|---|
| Status in China | Extinct in wild (EW) |
Description:
Large-sized clump bamboos; culms 10-12 m tall, 4.5-6.5 cm in diameter, zigzag at lower parts. Internodes thick-walled, slightly curved, 25-30 cm long, sparsely covered with minute bristly hairs when young, slightly swollen at base, covered with a ring of greyish hairs below each node. Branches usually emerged from basal nodes upward, solitary, bearing sharp tough thorns on the lower ones, but fascicled in threes or more in upper nodes, primary one thicker and longer. Culm leaves tardily deciduous; sheaths thick-leathery, glabrous, marked with several white stripes on each sides, obliquely truncate at apex, bearing a pair of small horns protruded from each shoulder; auricles linear-lanceolate, usually wrinkled, margin fringed with 5-10 mm long bristles; ligules 5-7 mm high; blades erect, broadly lanceolate, as wide as half of the sheath apex at base. Foliage leaf blades lanceolate, 9.5-19 cm long, 1.5-2.0 cm wide, glabrous above, pubescent beneath.
Distribution:
Cultivated in Ko Po Tsuen on Kam Tin in Yuen Long (But et al. 1985).
Habitat and Ecology:
Cultivated in open field near villages. Sprouting: summer.
This species was first discovered in Yuen Long in 1980, and has been known from specimen records till 1995 from that locality. Botanists believed that the species is extinct in the wild. The species was named after Prof. Woon-Young Chun, the founder and the late director of South China Institute of Botany in Guangzhou.
References:
Chia, L.C. & Fung, H.L., 1983: Notes on Gramineae: Bambusoideae in Hong Kong. Kew Bulletin 37(4): 591-595.
But, P.P.H., L.C. Chia, H.L. Fung and S.Y. Hu, 1985: Hong Kong Bamboo. 31. The Urban Council，Hong Kong.
賈良智、馮學琳，1996: 中國植物誌9(1): 58-59, 圖版13:12. 科學出版社，北京。
