中国大陆天麻属一新分布种——细天麻

报道了中国大陆兰科(Orchidaceae)天麻属(Gastrodia)1新记录种——细天麻(Gastrodia gracilis Bl.)。标本采自云南省开远市碑格乡,生于海拔约2 500m的常绿阔叶林下,群落郁闭度较大,林下湿润。标本主要形态学特征为总状花序长约6cm,花排列稀疏,管状,下垂,浅棕色,花被筒顶端5裂,苞片宿存,地下茎小。该种此前记录产于中国台湾及日本。该发现在中国大陆尚属首次,加强了中国云南植物区系与中国台湾以及日本植物区系的联系。

Gastrodia gracilis,a Newly Recorded Species of Gastrodia from Mainland,China

The species Gastrodia gracilis is reported as a new record from Chinese mainland,which is discovered in Beige country,Kaiyuan,Yunnan.The plants live in evergreen broad-leaved forest (altitude is about 2 500 m) whose crown density is larger,environment is wet.Its raceme is about 6 cm long,flowers laxly arranged,tubular,drooping,light brown.Apex of perianth tube 5-lobed,floral bracts persistent;Rhizome is small.It is native to Taiwan,China and Japan.This report strengthens the relationship between the flora of Yunnan and Taiwan,China,Japan flora.