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Issue: Vol. 660 No. 1: 16 Jul. 2024
Type: Correspondence
Published: 2024-07-16
DOI: 10.11646/phytotaxa.660.1.9
Page range: 88-92
Abstract views: 9
PDF downloaded: 0

Taxonomic studies of Cycas debaoensis (Cycadaceae) from China

Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China, University of Chinese Academy of Sciences, Beijing 100049, China
Collection & Conservation Department, Horticulture Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China, University of Chinese Academy of Sciences, Beijing 100049, China
Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China, University of Chinese Academy of Sciences, Beijing 100049, China
Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China, University of Chinese Academy of Sciences, Beijing 100049, China
Gymnosperms China nomenclature taxonomy typification

Abstract

Traditionally, species delimitation based on morphological and distributional evidence often leads to over- or underestimation of species diversity. The primary distribution area of Cycas debaoensis includes two habitats, which were initially published as two separate species, i.e., C. debaoensis in the karst habitat, and C. panshuiensis, which was originally published as Cycas gracilis Y.Y. Huang, Y.C. Zhong et Z.F. Lu, in the sand habitat. However, field investigations and population sampling in these two habitats revealed a certain degree of morphological transition and variation among the populations. Subsequent population genetic analysis showed minimal genetic differentiation among the populations in the two habitats, suggesting that they should be merged as a single species. Additionally, the typification of the name C. debaoensis is also discussed.

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