A re-examination of the circumscription of Saxifraga mengtzeana (Saxifragaceae)

doi:10.1002/ece3.9886

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	A re-examination of the circumscription of Saxifraga mengtzeana (Saxifragaceae)
	Zhang,Xin-Jian; Gornall,Richard J.; Zhang,Zhuo-Xin; Chen,Jun-Tong; Sun,Hang; Deng,Tao
	2023
发表期刊	ECOLOGY AND EVOLUTION
卷号	13 期号:3 页码:e9886
摘要	In the Flora of China account of Saxifraga mengtzeana Engl. & Irmsch., eight synonyms were attributed to it and one variant, recognized as Saxifraga epiphylla Gornall & Ohba, was split from it. This study reevaluates the taxonomic status of some of the synonyms and of the segregated species in light of new evidence presented here. Morphological and molecular evidence demonstrate that collections from northwestern Yunnan and Sichuan are genetically differentiated from those in southeastern Yunnan and neighboring Guangxi. Observations in the field and in cultivation show that the peltate petiole attachment diagnostic of S. mengtzeana var. peltifolia Engl. & Irmsch. is developmentally labile. Similar observations combined with molecular data show that viviparous phenotypes, formerly treated as S. epiphylla, although largely under genetic control, occur sporadically throughout the ranges of both northern and southern taxa. Collections from northwestern Yunnan and Sichuan are best recognized as Saxifraga geifolia Balf.f., whereas those from southeastern Yunnan and neighboring Guangxi are S. mengtzeana. Peltate-leaved variants of the latter are given no status and are relegated to complete synonymy. Viviparous phenotypes of S. mengtzeana and S. geifolia are recognized at the rank of forma.
关键词	China morphology phylogeny Saxifragaceae taxonomy HUNAN PROVINCE INFERENCE MRBAYES CHOICE
学科领域	Environmental Sciences & Ecology ; Evolutionary Biology
DOI	10.1002/ece3.9886
收录类别	SCI
WOS记录号	WOS:000947618600001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75316
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Zhang,Xin-Jian,Gornall,Richard J.,Zhang,Zhuo-Xin,et al. A re-examination of the circumscription of Saxifraga mengtzeana (Saxifragaceae)[J]. ECOLOGY AND EVOLUTION,2023,13(3):e9886.
APA	Zhang,Xin-Jian,Gornall,Richard J.,Zhang,Zhuo-Xin,Chen,Jun-Tong,Sun,Hang,&Deng,Tao.(2023).A re-examination of the circumscription of Saxifraga mengtzeana (Saxifragaceae).ECOLOGY AND EVOLUTION,13(3),e9886.
MLA	Zhang,Xin-Jian,et al."A re-examination of the circumscription of Saxifraga mengtzeana (Saxifragaceae)".ECOLOGY AND EVOLUTION 13.3(2023):e9886.

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