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Issue: Vol. 742 No. 3: 24 Feb. 2026
Type: Article
Published: 2026-02-24
DOI: 10.11646/phytotaxa.742.3.7
Page range: 243-249
Abstract views: 57
PDF downloaded: 5

First record of the monospecific genus Clarkella (Argostemmateae: Rubiaceae) in Vietnam

Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, 10072 Hanoi, Vietnam
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, 10072 Hanoi, Vietnam; Institute of Biology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, 10072 Hanoi, Vietnam
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, 10072 Hanoi, Vietnam
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, 10072 Hanoi, Vietnam; Institute of Biology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, 10072 Hanoi, Vietnam
Department of Higher Plants, Biological Faculty, M.V. Lomonosov Moscow State University, 1, 12, Leninskie Gory, 119234 Moscow, Russia; Joint Vietnam-Russia Tropical Science and Technology Research Center, 63, Nguyen Van Huyen street, Cau Giay, 122000 Hanoi, Vietnam
Eastern Indochina lectotypification limestone karst Son La Province Eudicots

Abstract

Clarkella nana, the only species of the genus Clarkella, is reported for the first time from Vietnam. The species was discovered on wet rocks of a limestone hill in Son La Province. Detailed photographic illustrations of the studied specimen are provided, along with a summary of the species distribution and its ecological preferences. Typification of the names related to Clarkella is revised, and the name Ophiorrhiza pellucida is lectotypified.

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How to Cite

Anh, T.T.P., Quang, B.H., Thanh, N.T., Nguyen, K.S. & Nuraliev, M.S. (2026) First record of the monospecific genus Clarkella (Argostemmateae: Rubiaceae) in Vietnam. Phytotaxa 742 (3): 243–249. https://doi.org/10.11646/phytotaxa.742.3.7