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Issue: Vol. 664 No. 4: 12 Sept. 2024
Type: Article
Published: 2024-09-12
DOI: 10.11646/phytotaxa.664.4.1
Page range: 229-248
Abstract views: 180
PDF downloaded: 10

New orchids in the flora of Vietnam IX (Orchidaceae: Orchidoideae, tribes Cranichideae and Orchideae)

Komarov Botanical Institute of the Russian Academy of Sciences, 2, Prof. Popov Street, 197022, St. Petersburg, Russia
Institute of Applied Technology, Thu Dau Mot University, No. 6, Tran Van On Street, Phu Hoa Ward, Thu Dau Mot City, Binh Duong Province, Vietnam
Mientrung Institute for Scientific Research, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 321, Huynh Thuc Khang Street, Hue City, Thua Thien Hue Province, Vietnam
Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85, Tran Quoc Toan Street, District 3, Ho Chi Minh City, Vietnam
Department of Higher Plants, Biological Faculty, M.V. Lomonosov Moscow State University, 1, 12, Leninskie Gory, 119234, Moscow, Russia. Joint Russian-Vietnamese Tropical Scientific and Technological Center, 63, Nguyen Van Huyen Street, Cau Giay District, 122000, Hanoi, Vietnam.
Komarov Botanical Institute of the Russian Academy of Sciences, 2, Prof. Popov Street, 197022, St. Petersburg, Russia
Komarov Botanical Institute of the Russian Academy of Sciences, 2, Prof. Popov Street, 197022, St. Petersburg, Russia
Vietnam National University of Forestry, Xuan Mai, Chuong My, Hanoi, Vietnam
Tay Nguyen Institute for Scientific Research, Vietnam Academy of Science and Technology, Dalat, Vietnam
endemism nature conservation new national records new species plant diversity plant invasions plant taxonomy Monocots

Abstract

The paper presents new data on the orchid diversity of Vietnam obtained mainly during the fieldwork of 2020–2023, as well as a result of investigation of the herbarium collections of Russia and Vietnam. It includes two species new to science, Bidoupia micrantha and Hylophila vietnamensis, and three species new to the native flora of Vietnam, i.e. Diphylax urceolata, Disperis neilgherrensis, and Habenaria siamensis. Three genera, Diphylax, Disperis and Hylophila, are reported here for the flora of Vietnam for the first time. In addition, a newly naturalized species Cynorkis fastigiata is documented, which originates from the Comoros, Madagascar, the Seychelles, and the Mascarenes. For each of the studied species, its type, relevant synonyms, studied specimens, ecology and phenology (within Vietnam), distribution, preliminarily assessed conservation status, brief taxonomic notes and illustrations are provided. For the newly described taxa, morphological descriptions and notes on etymology are additionally included.

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