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Article
Published: 2022-09-30

Argostemma tortilobum (Rubiaceae), a new species from Vietnam

College of Forestry and Landscape Architecture, South China Agricultural University, 510642, Guangzhou, China
Key Laboratory of Plant Resources Conservation and Sustainable Utilization & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China; Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, China
Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, Hanoi, Vietnam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
Key Laboratory of Plant Resources Conservation and Sustainable Utilization & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China; Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, China
Du Gia Nature Reserve plant taxonomy star-shaped corolla Eudicots

Abstract

Argostemma tortilobum, a new species endemic to Vietnam, is described and illustrated. The species is morphologically most similar to A. sarmentosum, but differs in having erect stem without runners, densely pilose peduncle and twisted corolla lobes with ciliate margins.

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