Begonia ngocbonii (sect. Petermannia, Begoniaceae), a new species from North Vietnam

Hoang Thanh Son,Che-Wei Lin,Trinh Ngoc Bon

PHYTOTAXA（2022）

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Abstract

Begonia ngocbonii, a new species from North Vietnam is here described and illustrated. It resembles B. pellionioides Y.M.Shui & W.H.Chen, but is distinguishable by its hairy (vs. glabrous) stem, shorter inflorescence up to 1 cm (vs. ca. 5 cm or longer), 2-tepaled staminate and pistillate flowers (vs. 4-tepaled staminate flowers and 5-tepaled pistillate flowers), glabrous tepals (vs. spiny pilose on abaxial surface of outer tepals) and unilamellate placenta (vs. bilamellate).

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Key words

Asia, biodiversity, endemism, taxonomy, morphology

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