New species or infraspecific variation? A case study of Ptychanthus striatus var. motuoensis var. nov. (Marchantiophyta: Lejeuneaceae) from Xizang, China
Zun Dai, S. Xing, S. Gradstein, Xing Chen, R. Zhu, Jian Wang
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引用次数: 0
Abstract
Abstract. An unusual specimen of the genus Ptychanthus (Lejeuneaceae) was collected in Xizang, differing from the common P. striatus in the perianth, having only five, wing-like keels (one dorsal, two lateral and two ventral), the lateral and ventral keels being sharper than the dorsal one. Molecular-phylogenetic analysis of chloroplast and nuclear DNA sequences showed that the plant was deeply nested within P. striatus. As the differences in perianth structure could not be attributed to plasticity, we interpret the phylogenetic position of the plant as the result of a recent speciation process and describe it as a new variety, P. striatus var. motuoensis.
期刊介绍：
The Bryologist is an international journal devoted to all aspects of bryology and lichenology, and we welcome reviews, research papers and short communications from all members of American Bryological and Lichenological Society (ABLS). We also publish lists of current literature, book reviews and news items about members and event. All back issues of the journal are maintained electronically. The first issue of The Bryologist was published in 1898, with the formation of the Society.
Author instructions are available from the journal website and the manuscript submission site, each of which is listed at the ABLS.org website.
All submissions to the journal are subject to at least two peer reviews, and both the reviews and the identities of reviewers are treated confidentially. Reviewers are asked to acknowledge possible conflicts of interest and to provide strictly objective assessments of the suitability and scholarly merit of the submissions under review.
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