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| Oreocharis caotierui X. L. Yu, L. Wu & A. Liu, in A. Liu, Gong, W.-J. Liu, X. Li, Zhu, X.-P. Li, S.-W. Wu, L.-X.Yang, J. Yang, L. Wu et Yu, 2025. Photographs by Ang Liu; Artwork by Jing Zhang. |
Abstract
Oreocharis caotierui, a new species, is described and illustrated from southern Hunan, China. It is similar to O. argyreia and O. xiangguiensis, but differs from the latter two in the following features: the corolla tube is significantly widened above the middle; the stamens are divided into two groups, one on each sides of the pistil and the lower two clearly protruding outside the corolla; the staminodes are 1.0–1.3 cm long. Following the IUCN Red List Criteria, O. caotierui is assessed as ‘Vulnerable' (VU) D1.
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| Oreocharis caotierui sp. nov. (A) Habit, (B–C) plants, (D) side view of flower, (E) front view of flower, (F) inflorescence, (G) immature fruits, (H) stamens and staminode. Photographs by Ang Liu. |
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| Oreocharis caotierui sp. nov. (A) Plant, (B) dorsal view of leaves, (C) front view of flower, (D) stamens and staminode, (E) side view of flower unfolding. Drawn by Jing Zhang. |
Oreocharis caotierui X. L. Yu, L. Wu & A. Liu sp. nov.
Diagnosis: A species most morphologically similar to O. argyreia and O.xiangguiensis, but easily distinguished from them by the following characters: 1) corolla tube significantly widened above the middle (versus almost straight); 2) stamens divided into two groups, with two in each group on either side of the pistil and the abaxial two clearly protrudeing outside the corolla (versus all located below the pistil and never protruding noticeably from the corolla); 3) staminodes (10–13 mm) longer than in O. argyreia (1.2 mm) and O. xiangguiensis (0.5 mm). ...
Ang Liu, You-ke Gong, Wen-jian Liu, Xiong Li, Lu Zhu, Xiang-peng Li, Shao-wu Wu, Li-xun Yang, Juan Yang, Lei Wu and Xun-lin Yu. 2025. Oreocharis caotierui, A New Species of Gesneriaceae from southern Hunan, China. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.04889 [26 September 2025]