中国大陆天麻属(兰科)新资料

New Records of Gastrodia(Orchidaceae)from Mainland,China

报道中国大陆兰科(Orchidaceae)天麻属(Gastrodia R.Brown)二新记录种——折柱天麻(Gastrodia flexistyla T.C.Hsu&C.M.Kuo)和叉脊天麻(Gastrodia shimizuana Tuyama)。折柱天麻与日本天麻[Gastrodia nipponica(Honda)Tuyama]相似,但前者花被筒长、疣状凸起不明显,唇瓣绿黄色等特征可与后者相区分。叉脊天麻与冬天麻(Gastrodia pubilabiata Sawa)相近,但前者花被筒浅黄褐色至淡红褐色,唇瓣三角状、白色等特征易与后者相区别。该文提供了新记录种的形态描述及图版。

Gastrodia flexistyla T.C.Hsu&C.M.Kuo and Gastrodia shimizuana Tuyama,two newly recorded species of Gastrodia R.Brown are reported from Mainland,China.G.flexistyla T.C.Hsu&C.M.Kuo resembles G.nipponica(Honda)Tuyama,but it differs from the latter by its perianth tube long,indistinctly verruculose,lip green-yellow,etc.And G.shimizuana Tuyama is similar to Gastrodia pubilabiata Sawa,but it can be distinguished from the latter by its perianth tube pale yellow-brown to pale red-brown,lip triangular,white,etc.The form description and photos of the newly recorded species are provided in the article.