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Issue: Vol. 718 No. 1: 16 Sept. 2025
Type: Article
Published: 2025-09-16
DOI: 10.11646/phytotaxa.718.1.6
Page range: 59-66
Abstract views: 682
PDF downloaded: 12

Vanilla baosangii (Orchidaceae, Vanilloideae), a new species from the Central Highlands of southern Vietnam

Faculty of Biology Education, School of Education, Cantho University, 3/2 Street, Ninh Kieu Ward, Can Tho City, Vietnam
Komarov Botanical Institute, Russian Academy of Sciences, Prof. Popov Street 2, 197022, St. Petersburg, Russia
Komarov Botanical Institute, Russian Academy of Sciences, Prof. Popov Street 2, 197022, St. Petersburg, Russia
Ho Chi Minh City University of Industry and Trade, Le Trong Tan St., 140, Tay Thanh Ward, Ho Chi Minh City, Vietnam
Institute of Innovation in Pharmaceutical and Healthcare Food, Thu Dau Mot University, 6 Tran Van On Str., Phu Loi Ward, Ho Chi Minh City, Vietnam
Institute of Life Science, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, Xuan Hoa ward, Ho Chi Minh City, Vietnam
Biotechnology Center of Ho Chi Minh City, No 2374 Do Muoi Street , Quarter 10, Trung My Tay Ward, Ho Chi Minh City, Vietnam
Biotechnology Center of Ho Chi Minh City, No 2374 Do Muoi Street , Quarter 10, Trung My Tay Ward, Ho Chi Minh City, Vietnam
Institute of Life Science, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, Xuan Hoa ward, Ho Chi Minh City, Vietnam
Institute of Life Science, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, Xuan Hoa ward, Ho Chi Minh City, Vietnam
Flora of Vietnam Miguelia Orchid plant diversity plant endemism plant geography plant taxonomy Vanilloideae Monocots

Abstract

Vanilla baosangii discovered in the Central Highlands of southern Vietnam (Don Duong District, Lam Dong Province), is described and illustrated. In floral morphology the new species is similar to Vanilla siamensis and V. tiendatii in having hairs on the apex of the epichile and hairy column. However, it differs from V. siamensis in fewer, but densely arranged, flattened, often forked hairs on median lip lobe, a verruculose surface between the hairy epichle and bunch of scales, two warty keels forming a groove inside the claw, lip side-lobes surface with four to five distinct verruculose lines, lateral wings of clinandrium prominent, semi-circular, and anther cap ca. 4 mm long, with 2 forward curved horns. From V. tiendatii the new species differs in having larger elliptic leaves 18–26 cm long, an inflorescence bearing up to 25 flowers, lip apex with a group of fat branched hairs 4–7 mm long, and column with dense long hairs at apex, much longer than those in the basal half. According to IUCN Red List Categories and Criteria V. baosangii is assessed as a Critically Endangered. An identification key to all species to Vanilla known in Vietnam is provided, based on recent taxonomic treatments.

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How to Cite

Dang, M.Q., Averyanov, L.V., Maisak, T.V., Tran, T.T.N., Nguyen, van C., Dang, van S., Huynh, H.D., Nguyen, T.G., Truong, Q.T. & Truong, B.V. (2025) Vanilla baosangii (Orchidaceae, Vanilloideae), a new species from the Central Highlands of southern Vietnam. Phytotaxa 718 (1): 59–66. https://doi.org/10.11646/phytotaxa.718.1.6