 |
| Oreocharis qianyuensis Lei Cai, J.W.Yang & Q.Zhang, in Yang, Qin, Xu, Li, Ren, Yuan, Zhang, Yi & Cai, 2022. |
Abstract
Oreocharis qianyuensis, a new species of Gesneriaceae from Southwest, China, is described and illustrated based on morphological comparisons and molecular phylogenetic analyses. Phylotranscriptomic analyses of the new species in the context of a comprehensive phylogeny with dense sampling of 88% (111/126) of all species of the genus indicated that the new species was most closely-related to O. fargesii. The new species is morphologically similar to O. fargesii and O. nanchuanica in the shape, color and structure of flowers and the number of stamens, but differs in the leaf blade shape, margin and the indumentum characters of the inflorescence. Its morphological relationship with similar species is discussed, the detailed descriptions, colour photographs, distribution, as well as the IUCN threatened status based on the IUCN Red List Categories and Criteria are also provided.
Keywords: Flora of China, Morphology, Oreocharis, Phylotranscriptomics
 |
| Oreocharis qianyuensis sp. nov. A habit B front view of a flower C side view of a flower D opened corolla showing stamens and staminode E pistil with disc and calyx F old fruit. Drawn by Xuan-Lin Zhu. |
 |
| Oreocharis qianyuensis sp. nov. (Population in Guizhou) A, B inflorescence C top view of flower D side view of flower E, F front view of flowers G young fruit, pistil with disc and calyx, opened corolla showing stamens and staminode H pistil with disc and calyx I opened corolla showing stamens and staminode J old fruit. |
 |
| Oreocharis qianyuensis sp. nov. (Population in Guizhou) A, C habitat B, D plants with flowers. |
Oreocharis qianyuensis Lei Cai, J.W.Yang & Q.Zhang, sp. nov.
Diagnosis: The new species is morphologically most similar to Oreocharis fargesii (Franch.) Mich. Möller & A. Weber and O. nanchuanica (K.Y. Pan & Z.Y. Liu) Mich. Möller & A. Weber in the color, shape and structure of flowers, but differs from the latter two in its inconspicuously petiolate, obovate to flabellate leaf blade with adaxially surface sparsely rust-brown pubescent to glabrescent, abaxially densely rust-brown villous, apex rounded, base extending downward into a wing shape, margin crenate, and the peduncle and pedicel densely glandular pubescent. A comparison of morphological differences between the related species is provided in Table 1.
Etymology: The specific epithet ‘qianyuensis’ refers to the known distribution at the time of publication in Guizhou and Chongqing in China. Qian is an alternative name for Guizhou and Yu is an alternative name for Chongqing.
Vernacular name: The Chinese name of the new species is “Qian Yu Ma Ling Ju Tai” (黔渝马铃苣苔). The first two characters mean this species is distributed in Guizhou and Chongqing, and the last four characters represent the Chinese name of the genus Oreocharis.
Jia-Wen Yang, Xin-Mei Qin, Jian Xu, Cong-Rui Li, Qi-Fei Ren, Mao-Qin Yuan, Qiang Zhang, Si-Rong Yi and Lei Cai. 2022. Oreocharis qianyuensis, A New Species of Gesneriaceae from Southwest China based on Morphological and Molecular Evidence. PhytoKeys. 213: 119-130. DOI: 10.3897/phytokeys.213.84349
