Gastrochilus obovatifolius (Orchidaceae, Aeridinae), a new species from the Daba Mountains of Chongqing, China
Chi Xiong,
Xiao-Ying Fu,
Ke Tan,
Ya Huang,
Hong-Jing Zhang,
Yi-Chen Wang,
Yu-Bing Yang,
Si-Rong Yi
Affiliations
Chi Xiong
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences
Xiao-Ying Fu
Guangxi Normal University
Ke Tan
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences
Ya Huang
Chongqing Key Laboratory of Development and Utilization of Genuine Medicinal Materials in Three Gorges Reservoir Area, Chongqing Three Gorges Medical College
Hong-Jing Zhang
Chongqing Key Laboratory of Development and Utilization of Genuine Medicinal Materials in Three Gorges Reservoir Area, Chongqing Three Gorges Medical College
Yi-Chen Wang
Hangzhou Botanical Garden
Yu-Bing Yang
Southwest University
Si-Rong Yi
Chongqing Key Laboratory of Development and Utilization of Genuine Medicinal Materials in Three Gorges Reservoir Area, Chongqing Three Gorges Medical College
Gastrochilus obovatifolius, a new species discovered in the Dabashan of northeast Chongqing (China), is described and illustrated. The novelty morphologically resembles G. affinis, G. balangshanensis and G. heminii in having a glabrous and smooth epichile. but can be distinguished by the unique obovate shape of the leaves, smaller epichile, and flower color. The results of molecular phylogenetic analysis, based on nuclear ribosome internal transcribed spacer (nrITS) and four chloroplast DNA fragments (matK, psbA–trnH, psbM–trnD, and trnL–F) of 55 Gastrochilus species, support the inclusion of G. obovatifolius in G. sect. Microphylli, being most closely related to G. balangshanensis from Sichuan. The new species is a trunk epiphyte in evergreen broad-leaved forest.
