Hymenasplenium tholiformis (Aspleniaceae), a new fern species from southeastern Xizang, China based on morphological and molecular evidence

Authors: Qiu, Yong-Lin Country: People's Republic of China DOI: 10.3897/phytokeys.204.85746 Published: Jan. 1, 2022 Source: PhytoKeys OpenAlex: View in OpenAlex

Collection: Pensoft Publishers

Keywords: Hymenasplenium · Topics: Fern and Epiphyte Biology, Plant and Fungal Species Descriptions, Plant Diversity and Evolution

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A new species of Aspleniaceae, Hymenasplenium tholiformis sp. nov., is described from Medog County in southeastern Xizang, China. The new species is morphologically similar to H. apogamum and H. szechuanense, but the former has ascending pinnae, pinna apex obtuse to rounded, pinna-marginal teeth entire, and veins terminating just below marginal teeth. Phylogenetic analysis based on five plastid markers confirmed that this new species represents a diverging lineage in the H. excisum subclade of Hymenasplenium.

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