西藏兰科植物新资料

New data of Orchidaceae in Xizang,China

该文报道了西藏的2个野生兰科植物,分别为绿春阔蕊兰(Peristylus biermannianus(King et Pantl.)X.H.Jin,Schuit.&W.T.Jin)和先骕兰(Hsenhsua chrysea(W.W.Sm.)X.H.Jin,Schuit.,W.T.Jin&L.Q.Huang),绿春阔蕊兰首次在西藏定结县被发现,海拔2450 m,生于林下草丛,为西藏新记录种;先骕兰发现于西藏洛扎县,海拔4136~4428 m,生于高山草甸,为西藏新分布;凭证标本保存于西藏自治区高原生物研究所标本馆(XZ),并附有形态特征描述和彩色图片.以上新记录种和新分布的发现进一步丰富了高海拔兰科植物区系资料,拓宽了高海拔西藏兰科植物的分布记录,对青藏高原兰科植物多样性研究和保护具有重要意义.

Two orchid species were reported in Xizang(Tibet),including Hsenhsua chrysea and Peristylus biermannianus.Peristylus biermannianus was found in the grass under the forest as a new record in Xizang,at an altitude of 2450 m;Hsenhsua chrysea was reported in LuoZha County which is the highest elevation record(4136-4288 m)in Xizang.Voucher specimens were disposited in herbarium of the Tibet Plateau Institute of Biology(XZ).The morphological descriptions and colour pictures are provided.The find of the two orchid species enriched the flora of Xizang,and broadened the distribution record of high-altitude orchids in Qinghai-Tibet Plateau.It has important ecological charactrastics for floristic analysis,diversity and conservation.