Zingiber longii (Zingiberaceae), a new species from Southeast Yunnan, China.

Zingiber longii Y.H.Tan & H.B.Ding, sp. nov. (Zingiberaceae) from southeast Yunnan, China, is described and illustrated here. It belongs to the Zingiber sect. Dymczewiczia due to the terminal inflorescence on the leafy shoot. It is similar to Z. rufopilosum in its rufous pilose leaf sheaths and ligules but differs from it by emarginate labellum, glabrous margins of the laminae and ostiole (vs. distinctly bifid labellum with an incision about 1/3 of its length, margins of laminae pilose and ciliate ostiole). [ABSTRACT FROM AUTHOR]