Summary
Hemipilia yajiangensis, a new orchid species from western Sichuan, China is described and illustrated based on molecular and morphological evidence. It is morphologically similar to H. galeata and H. hemipilioides, but H. yajiangensis is clearly distinguished by its ovate to broadly ovate, deep green with whitish reticulate lined leaf, elliptic dorsal sepal, lanceolate to ligulate lateral lip lobe, as well as obovate and sometimes nearly quadrate midlobe. Phylogenetically, nuclear (nrITS) and plastid (combined matK, psaB, psbA-trnH, rbcL plus trnL-F) trees consistently demonstrate that H. yajiangensis is sister to H. galeata, and support the new species as one of the members of H. sect. Hemipilia as defined by Tang et al.
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Acknowledgements
The authors are grateful to the National Wild Plant Germplasm Resource Center for their support. The research was funded by the Special Project of Orchid Survey of National Forestry and Grassland Administration (contract no. 2019073008), Second Tibetan Plateau Scientific Expedition and Research (STEP) program (2019QZKK0502), and the National Natural Science Foundation of China (No. 31970211).
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Yang, J., Peng, S., Wang, J. et al. Hemipilia yajiangensis (Orchidoideae, Orchidaceae), a new species from western Sichuan, China, based on molecular and morphological evidence. Kew Bull 77, 973–982 (2022). https://doi.org/10.1007/s12225-022-10049-w
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DOI: https://doi.org/10.1007/s12225-022-10049-w