新疆柳属一新记录种——粉枝柳

在研究新疆阿勒泰地区柳属(SalixL.)植物时发现了新疆杨柳科(Salicaceae)柳属植物新记录组粉枝柳组(Sect.Daphnella Seringe ex Duby)及新疆新记录种粉枝柳(Salix rorida Laksch.)。该种雌花苞片长圆形、倒卵状长圆形、倒卵状椭圆形和倒卵形,先端锐尖,苞片基部两侧各具3~4个腺点;雄花苞片倒卵形和倒卵状长圆形,先端锐尖,稀凹陷,在个别苞片基部一侧会有不明显的2~3个腺点,与其他分布区的粉枝柳稍有差异。主要分布在哈巴河中、上游及其2个支流,生于河岸及人工渠道岸边,海拔900~1 500m之处。

Salix rorida,A New Record Species of Salix L.from Xinjiang,China

In the present paper,a new record species Salix rorida Laksch.with a new record section Sect.Daphnella Ser.of the genus Salix (Salicaceae) was described from Altay,Xinjiang,China.This species occurs near the mid-upper stream of Habahe River and its two tributaries,on river bank and artificial channel shore,about 900-1 500 m above sea level.It can be characterized by following features:leaves 3-8 cm long and 0.8-2.5 cm wide;female individuals with bracts oblong,obovate-oblong,obovate-elliptic or obovate,apex acute,and with 3-4 glands on both sides of bract base;male individuals with bracts obovate or obovate oblong,apex acute,rarely sunken,with 2-3 obscure glands on the base of some bracts occasionally.The flowering period ranges from April to May,and fruiting period from May to June,respectively.