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Article
Published: 2021-11-30

Euphorbia motuogensis (Euphorbiaceae), a new species from Xizang, China

The Center for Biodiversity Conservation and Utilization, School of Life Sciences, Southwest University, 400715, Beibei, Chongqing, China; Key Laboratory of Eco–Environments in Three Gorges Reservoir Region, School of Life Sciences, Southwest University, 400715, Beibei, Chongqing, China
The Provincial and Ministerial Co-founded Collaborative Innovation Center for R&D in Tibet Characteristic Agricultural and Animal Husbandry Resources, Tibet Agriculture and Animal Husbandry University, 860000, Nyingchi, Xizhang, China; The Center for Xizang Chinese (Tibetan) Medicine Resource, Tibet Agriculture and Animal Husbandry University, 860000, Nyingchi, Xizhang, China
The Center for Biodiversity Conservation and Utilization, School of Life Sciences, Southwest University, 400715, Beibei, Chongqing, China; Key Laboratory of Eco–Environments in Three Gorges Reservoir Region, School of Life Sciences, Southwest University, 400715, Beibei, Chongqing, China
The Center for Biodiversity Conservation and Utilization, School of Life Sciences, Southwest University, 400715, Beibei, Chongqing, China; Key Laboratory of Eco–Environments in Three Gorges Reservoir Region, School of Life Sciences, Southwest University, 400715, Beibei, Chongqing, China
Euphorbia Euphorbiaceae morphology taxonomy Eudicots

Abstract

Euphorbia motuogensis M. T. Li, X. Z. Lan, H. P. Deng & W. L. Zheng, sp. nov., a new species from Motuo, Tibet, China, is described and illustrated here. It is closely similar to Euphorbia sikkimensis in having terete root, alternate leaves, well-developed pseudoumbellate inflorescence, cyathium, smooth and glaborus capsule, but Euphorbia motuogensis is clealy distinguishable by its pilose stems, involucral leaves color, secondary involucral leaves absent, cyathophylls number and color, and five similar glands. Furthermore, molecular phylogenetic analyses of sequences from both nuclear ribosomal ITS confirm that this species is distinct from morphologically similar species in this subgenus.

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