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| Sedum zhenghaianum Y.L. Xu in She, Huang, Zhang, Yao, Zhu, Zhou et Xu. 2026. |
Abstract
In this paper, Sedum zhenghaianum sp. nov. is described as a new species based on morphological and molecular analyses, and its taxonomic relationships are discussed. Morphological analysis indicates that S. zhenghaianum should be classified in the genus Sedum sect. Sedum and is distinct from the related species S. tosaense in morphology, e.g. by lacking sterile stems, rosulate leaves 4-whorled, leaf blade and sepal apices retuse or obtuse, flowers pedicellate, ventral suture of follicles with a wing-like membranous structure, and seeds with auricled protrusions. Phylogenetic analysis of sequences of the nuclear ribosomal internal transcribed spacer (ITS) further demonstrates that S. tosaense is the closest extant relative of the new species.
Keywords: ITS, morphological characters, new species, phylogenetic analysis, Sedum zhenghaianum
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| Sedum zhenghaianum sp. nov. (A) General view , (B) flower, (C) petals and stamens, (D) sepals, (E) mature follicle. Drawn by Xin Zhou, based on the holotype. |
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| Morphology of Sedum zhenghaianum sp. nov. (A) Habitat, (B) rosulate plant in winter, (C) plant in early spring, (D) plant in flowering stage, (E) plant in fruiting stage, (F) rosulate leaves (4-whorled and spurless), (G) upper leaves (alternate and shortly spurred), (H) inflorescence, (I) flower, (J) sepals, (K) peduncle, (L) follicle. |
Sedum zhenghaianum Y.L. Xu sp. nov.
Etymology: The specific epithet ‘zhenghaianum' is derived from the name of Zhenghai Chen (Professor Senior Engineer of Zhejiang Forest Resources Monitoring Center), to honor his contributions to the discovery of this new species.
Shi-Qi She, Shi-Guo Huang, Yang Zhang, Shen-Hao Yao, Zong-Wei Zhu, Xin Zhou and Yue-Liang Xu. 2026. Sedum zhenghaianum (Crassulaceae), A New Species from Zhejiang and Jiangxi, East China. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.05024 [27 January 2026]
