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Issue: Vol. 662 No. 1: 6 Aug. 2024
Type: Article
Published: 2024-08-06
DOI: 10.11646/phytotaxa.662.1.10
Page range: 115-120
Abstract views: 58
PDF downloaded: 1

Begonia nahauensis (sect. Platycentrum, Begoniaceae), a new species from northern Vietnam

Vietnam National University of Forestry, 21A Street, Xuan Mai, Chuong My, Hanoi,Vietnam
Vietnam National University of Forestry, 21A Street, Xuan Mai, Chuong My, Hanoi,Vietnam
Vietnam National University of Forestry, 21A Street, Xuan Mai, Chuong My, Hanoi,Vietnam
Vietnam National University of Forestry, 21A Street, Xuan Mai, Chuong My, Hanoi,Vietnam
Herbarium of Taiwan Forestry Research Institute, Taiwan Forestry Research Institute, No. 53, Nan–Hai Road, Taipei 100, Taiwan
endemism Na Hau Nature Reserve plant diversity plant taxonomy Yen Bai province Eudicots

Abstract

A new species of Begonia sect. Platycentrum, Begonia nahauensis, is described based on morphological characters. The new species is morphologically similar to B. auritalata, however, it is clearly distinct from the latter due to its petioles and ovary, which are densely covered with gland-tipped hairs (vs. non-glandular hairs), capsule with three complete locules (vs. three locules, but one of them is either underdeveloped or degenerated) and three straight wings (vs. adaxial wing being concave). A morphological description and diagnosis, information on distribution and ecology, and a preliminary conservation assessment are provided.

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