国产川竹植物的名实考订

在野外调查和文献考证的基础上，讨论了国产鉴定为Pleioblastus simonii(Carr.) Nakai这种竹子的名实问题。事实上国产这种竹子与日本产P.simonii(Carr.) Nakai在形态特征和自然分布上有较大的区别。日本产的秆箨宿存不落，秆圆筒形，分枝一侧不扁平，花序为具有穗柄的单次发生的真花序，内稃先端2齿裂，花药绿黄色；而国产的秆箨早落，秆节间分枝一侧2/3扁平，花序为侧生于枝节而无柄的续次发生的假花序，内稃先端钝通常不2裂，花药紫色。据进一步研究表明，国产这种竹子实际上乃是1998年已经命名发表的白纹短穗竹(Brachstachyum albostriatum G.H.Lai)，并在此依据其形态特征组合到业平竹属(Semiarundinaria Makino ex Nakai)之中。现知白纹业平竹(Semiarundinaria albostriata(G.H.Lai) G.H.Lai)分布于江苏南部、安徽南部、浙江西北部一带，以安徽南部较为常见。

Identity of Chinese Pleioblastus simonii(Carr.)Nakai(Gramineae:Bambusoideae)

The identity of the Chinese bamboo as Pleioblastus simonii(Carr.) Nakai is discussed on the basis of fieldwork and literature research. This Chinese bamboo with deciduous culm-sheaths; internodes 2/3 flattened above branches; lateral, sessile iterauctant inflorescences; usually not bifid apex of palea and purple anthers, in fact, is obviously different from Japanese P.simonii(Carr.) Nakai with persistent culm-sheaths; terete, not flattened internodes; pedicelled semelauctant inflorescences; bifid apex of palea and green-yellow anthers in some important characters and natural distribution. A further study showed that this Chinese bamboo should be actually regarded as Semiarundinaria albostriata(G. H. Lai) G. H. Lai, a new combination from Brachystachyum albostriatum G. H. Lai published in 1998. It is known now that this species is frequently distributed in south Anhui, also found in south Jiangsu and northwest Zhejiang, China.