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Issue: Vol. 762 No. 2: 16 Jun. 2026
Type: Article
Published: 2026-06-16
DOI: 10.11646/phytotaxa.762.2.8
Page range: 177-184
Abstract views: 0
PDF downloaded: 0

Begonia thanhquyetii (B. sect. Petermannia, Begoniaceae), a new species from Quang Tri province, Central Vietnam

Vietnam National University of Forestry - Gia Lai Campus; Hoi Phu; Pleiku; Gia Lai; Vietnam
Vietnam National University of Forestry; Xuan Mai; Hanoi; Vietnam
Mientrung Institute for Scientific Research; Vietnam National Museum of Nature; Vietnam Academy of Science and Technology; 321; Huynh Thuc Khang Street; Hue City; Vietnam
Vietnam National University of Forestry; Xuan Mai; Hanoi; Vietnam
Phong Dien Nature Reserve; Hue City; Vietnam
Vietnam National University of Forestry; Xuan Mai; Hanoi; Vietnam
Vietnam National University of Forestry; Xuan Mai; Hanoi; Vietnam
Quang Binh University; Ly Thuong Kiet; Dong Hoi; Quang Tri; Vietnam
Faculty of Pharmacognosy and Traditional Medicine; 13-15 Le Thanh Tong; Hanoi University of Pharmacy; Hoan Kiem; Hanoi 110000; Vietnam
Komarov Botanical Institute of the Russian Academy of Sciences; Prof. Popov str.; 2; St. Petersburg; 197022; Russia
Herbarium of Taiwan Forestry Research Institute; Taiwan Forestry Research Institute; No. 53; Nan–Hai Road; Taipei 100; Taiwan
Eudicots biodiversity endemism Flora of Vietnam Indochina taxonomy

Abstract

Begonia thanhquyetii, a new species from central Vietnam, is herein described and illustrated. It is morphologically most similar to B. baik in its creeping habit, rugose ovate leaves, and protogynous inflorescences. However, it differs in several key morphological characters, including stipules hirsute on the abaxial surface (vs. glabrous), bracts lacking glandular hairs along the margins (vs. glandular-ciliate), a pair of bracteoles present near the apex of the pistillate pedicel (vs. bracteoles absent), abaxial tepals of both staminate and pistillate flowers hirsute (vs. glabrous), and densely hirsute ovary (vs. glabrous). Following the IUCN Red List Categories and Criteria (Version 16), B. thanhquyetii is provisionally assessed as Least Concern (LC), pending further field surveys to clarify its distribution and population status.

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How to Cite

Duong, N.V., Nguyen, C.H., Le, A.T., Bui, D.T., Dinh, D., Dang, H.V., Nguyen, Y.T., Tran, H.T., Nguyen, T.H., Averyanov, L.V. & Lin, C.W. (2026) Begonia thanhquyetii (B. sect. Petermannia, Begoniaceae), a new species from Quang Tri province, Central Vietnam. Phytotaxa 762 (2): 177–184. https://doi.org/10.11646/phytotaxa.762.2.8