Gastrochilus immaculatus (Orchidaceae, Epidendroideae), a new epiphytic orchid from Chongqing, Southwest China.
6 affiliations
- 1College of Life Sciences, Sichuan University, Chengdu 610064, China College of Life Sciences, Sichuan University Chengdu China https://ror.org/011ashp19.
- 2University of Chinese Academy of Sciences, Beijing 10049, China University of Chinese Academy of Sciences Beijing China https://ror.org/05qbk4x57.
- 3Wolong National Natural Reserve Administration Bureau, Wenchuan 623006, China Wolong National Natural Reserve Administration Bureau Wenchuan China.
- 4Chongqing Agricultural Ecology and Resource Protection Station, Chongqing 401121, China Chongqing Agricultural Ecology and Resource Protection Station Chongqing China https://ror.org/023rhb549.
- 5Chongqing Academy of Agriculture Sciences, Chongqing 401329, China Chongqing Academy of Agriculture Sciences Chongqing China.
- 6Chongqing Museum of Natural History, Chongqing 400799, China Chongqing Museum of Natural History Chongqing China.
Abstract
Gastrochilus immaculatus (Orchidaceae) is described and illustrated as a new species from Chongqing, southwestern China, where it grows epiphytically on tree trunks or rock walls in evergreen broad-leaved forests. It differs from the morphologically similar G. fargesii by its shorter stems, broader falcate-oblong leaves, and, especially, its golden-yellow immaculate flowers with a rather acute apex of the hypochile. Phylogenetic analyses based on nuclear ITS and four chloroplast markers (matK, psbA-trnH, psbM-trnD, and trnL-F) strongly support it as a sister species of G. fargesii within G. sect. Acinacifolii. Only three small subpopulations were discovered within a scenic spot in a deep limestone valley in southern Chongqing, warranting a preliminary IUCN classification of Critically Endangered (CR). This discovery also highlights the overlooked epiphytic orchid diversity along the mountain ranges surrounding the Sichuan Basin.
Related
BibTeX
@article{zhang2026gastrochilus,
title = {{Gastrochilus immaculatus (Orchidaceae, Epidendroideae), a new epiphytic orchid from Chongqing, Southwest China.}},
author = {Jun-Yi Zhang and Min Liao and Pan-Yan Yang and Yue-Hong Cheng and Jin-Zhong Wu and Peng-Cheng Zhang and Ding-Xiang Yu and Feng Chen and Bo Xu},
journal = {PhytoKeys},
year = {2026},
month = oct,
doi = {10.3897/phytokeys.280.206936},
url = {https://europepmc.org/article/MED/42959720},
note = {CC BY},
}
RIS
TY - JOUR
TI - Gastrochilus immaculatus (Orchidaceae, Epidendroideae), a new epiphytic orchid from Chongqing, Southwest China.
AU - Jun-Yi Zhang
AU - Min Liao
AU - Pan-Yan Yang
AU - Yue-Hong Cheng
AU - Jin-Zhong Wu
AU - Peng-Cheng Zhang
AU - Ding-Xiang Yu
AU - Feng Chen
AU - Bo Xu
PY - 2026
DA - 2026/10/19
JO - PhytoKeys
DO - 10.3897/phytokeys.280.206936
UR - https://europepmc.org/article/MED/42959720
AB - Gastrochilus immaculatus (Orchidaceae) is described and illustrated as a new species from Chongqing, southwestern China, where it grows epiphytically on tree trunks or rock walls in evergreen broad-leaved forests. It differs from the morphologically similar G. fargesii by its shorter stems, broader falcate-oblong leaves, and, especially, its golden-yellow immaculate flowers with a rather acute apex of the hypochile. Phylogenetic analyses based on nuclear ITS and four chloroplast markers (matK, psbA-trnH, psbM-trnD, and trnL-F) strongly support it as a sister species of G. fargesii within G. sect. Acinacifolii. Only three small subpopulations were discovered within a scenic spot in a deep limestone valley in southern Chongqing, warranting a preliminary IUCN classification of Critically Endangered (CR). This discovery also highlights the overlooked epiphytic orchid diversity along the mountain ranges surrounding the Sichuan Basin.
SN - 1314-2011
SN - 1314-2003
ER -