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title: Integrated taxonomy of the Asplenium normale complex (Aspleniaceae) in China and adjacent areas
author: Chang, Yanfen;  Ebihara, Atsushi;  Lu, Shugang;  Liu, Hongmei;  Schneider, Harald
Issued Date: 2018
Subject: Plant Sciences
Keyword: Aspleniaceae;  Asplenium;  Species complex;  Morphometric;  Taxonomy
Abstract: The Asplenium normale D. Don complex comprises several taxa that are either diploid or tetraploid. The tetraploids are assumed to have originated from diploid ancestors by relatively recent autopolyploidization or allopolyploidization. Some of the diploids are readily recognized morphologically but most of the taxa have until now been placed into a single species. However, phylogenetic studies have challenged this treatment and emphasized the notion that the taxonomic treatment of this complex needs to be revised. An integrative taxonomic approach was employed to delimit species in the complex using cytological, morphological, and DNA sequence data. Initially, we employed a diploid first approach to establish a robust taxonomic framework. Special efforts were made to collect and identify the diploid progenitors of each polyploid lineage identified in the plastid DNA based phylogenetic hypothesis. A total of six distinct diploid species were identified. The distinctive nature of the six diploids is strongly supported by sequence differences in plastid DNA and nuclear loci, as well as by the results of morphometric analysis. Diagnostic morphological characters were identified to distinguish the six diploid species, resulting in their revised taxonomy, which includes two novel species, namely, Asplenium normaloides and A. guangdongense. Further studies to strengthen the taxonomic classification of all of the tetraploid taxa are warranted.
Department: 其他
Related URLs: 10.1007/s10265-018-1032-y
Content Type: 期刊论文
ISSN: 0918-9440
Language: 英语
Appears in Collections:支撑系统_期刊论文

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Recommended Citation:
Chang, Yanfen,Ebihara, Atsushi,Lu, Shugang,et al. Integrated Taxonomy Of The Asplenium Normale Complex (aspleniaceae) In China And Adjacent Areas[J]. Journal Of Plant Research,2018,131(4):573-587.

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