(82) 煥鏞箣竹
Bambusa chunii Chia & Fung
禾本科(Poaceae)

英文名 (English name): Woon-young Bamboo

中國境內現狀：野外絕滅 (EW)
Status in China: Extinct in wild (EW)

形態特徵：根狀莖粗短型。稈叢生，高10-12米，直徑4.5-6.5厘米，下部略呈之字形曲折。節間厚壁，長25-30厘米，幼時疏被小刺毛，基部稍腫脹；節下常被一圈灰白色絹毛。分枝常於稈基部節上開始分出單枝；下部枝上具銳刺；稈中上部3至多枝簇生，主枝較粗長。稈籜遲落；籜鞘厚革質，無毛，兩側近邊緣具數條白色條紋，先端斜截形，兩肩各高起成一不等長的內彎小尖角；籜耳線狀披針形，常皺縮，邊緣剛毛長5-10毫米；籜舌高5-7毫米；籜片直立，寬披針形，其基部寬度約為籜鞘先端寬的一半。葉片披針形，長9.5-19厘米，寬1.5-2.0厘米，上面無毛，背面被短柔毛。

地理分布: 元朗錦田高埔村有栽培(據But et al. 1985)。

生境與生態：多栽培於村邊空地。夏季出筍。

香港是本種的模式標本產地，首次於1980年在元朗發現，直至1995年左右仍有採自該地點的標本記錄。植物學家相信本種已在野外絕滅。本種種名為紀念創辦華南植物研究所的已故所長陳煥鏞教授。

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.

參考文獻 (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。