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Issue: Vol. 507 No. 2: 9 June 2021
Type: Article
Published: 2021-06-09
DOI: 10.11646/phytotaxa.507.2.8
Page range: 198–204
Abstract views: 23
PDF downloaded: 1

Leptomischus anisophyllus (Argostemmateae: Rubiaceae), a new species from Vietnam

Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, Hanoi, 100000, Vietnam.
Institute of Ecology and Biological Resources, Vietnam Academy of Sciences and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 100000, Vietnam.
Joint Russian-Vietnamese Tropical Scientific and Technological Center, Cau Giay, Hanoi, Vietnam. Department of Higher Plants, Biological Faculty, M.V. Lomonosov Moscow State University, 1, 12, Leninskie Gory, Moscow, 119234, Russia.
Institute of Ecology and Biological Resources, Vietnam Academy of Sciences and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 100000, Vietnam.
Komarov Botanical Institute of the Russian Academy of Sciences, 2, Prof. Popov str., St. Petersburg, 197376, Russia.
anisophylly conservation distyly eastern Indochina endemism heterostyly Nghe An Province plant diversity Pu Mat National Park Eudicots

Abstract

Leptomischus anisophyllus, a new species of Rubiaceae, is described and illustrated, and its conservation status is discussed. The species was discovered in 2017 during a botanical survey of Pu Mat National Park (Nghe An Province, Central Vietnam). The new species is remarkable by its anisophylly, a rare feature in Leptomischus. Besides, Leptomischus anisophyllus differs from morphologically similar congeners by the following features: stems terete, pubescent when young, flowers distylous, corolla tube 10–15 mm long. An updated key to the Vietnamese species of Leptomischus is provided.