On the taxonomic identity and lectotypification of Impatiens uncipetala C.B.Clarke ex Hook.f.

This is the authors' abstract. We don't add key points for this paper.

Impatiens yui S.H.Huang from NW Yunnan is treated as a synonym of I. uncipetala C.B.Clarke ex Hook.f., known from eastern Himalaya of Nepal, Sikkim, West Bengal and Arunachal Pradesh. The species epithet of the latter is misleading because observations of living specimens do not support the hook-like shape for the appendage of the upper lateral petal. The name I. uncipetala C.B.Clarke ex Hook.f. is lectotypified herewith.