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| Begonia pingxiangensis W.G. Wang, F.Y. Nong & H.C. Xi, in Xi, Nong, Shen, Ma, Jiang et Wang, 2025. |
Abstract
Begonia pingxiangensis, a new species from Guangxi, China, is described and illustrated. The new species resembles B. daxinensis in the leaf blade and flower, but can be distinguished by its leaf blade shape (ovate to broadly ovate vs obliquely ovate to suborbicular), size (4–8 × 3–7 cm vs 10–24 × 10–17 cm), flower color (white vs white or pinkish), smaller staminate flowers (outer two 5–8 × 6–10 mm, inner two ca. 3–4 × 2 mm vs outer two 12–19 × 10–16 mm, inner two 12–14 × 4–5 mm) and pistillate flowers (outer two tepals 7–8 × 8–10 mm, inner one 3–4 × 2 mm vs outer two tepals 10–15 × 10–12 mm, inner one 5–7.5 × 2–5 mm) sizes. Detailed description is provided.
Keyword: Begonia, Begonia daxinensis, China, Guangxi, new taxon, taxonomy
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| Illustration of Begonia pingxiangensis W.G. Wang, F.Y. Nong & H.C. Xi. A. Cultivated plant. B. Rhizome. C. Stipules. D. Part of petiole. E. Leaf blade, adaxial and abaxial. F. Inflorescence. G. Bracts. H. Part of peduncle. I. Staminate flower, adaxial view and abaxial view. J. Dissected corolla of staminate flower. K. Androecium. L. Pistillate flower, different views. M. Pistil. N. Dissected corolla of pistillate flower. O. Dissected ovary, showing parietal placentation. P. Capsule. Q. Seeds. |
Begonia pingxiangensis W.G.Wang, F.Y.Nong & H.C.Xi, sp. nov.
凭祥秋海棠
Sect. Coelocentrum
Diagnosis: The new species resembles Begonia daxinensis T. C. Ku (Wu and Ku, 1997) in the leaf and flower, but can be distinguished by its leaf blade shape (ovate to broadly ovate vs obliquely ovate to suborbicular), size (4–8 × 3–7 cm vs 10–24 × 10–17 cm), flower color (white vs white or pinkish), smaller staminate flower (outer two 5–8×6–10 mm, inner two ca. 3–4 × 2 mm vs outer two 12–19 × 10–16 mm, inner two 12–14 × 4–5 mm) and pistillate flower (outer two tepals 7–8 × 8–10 mm, inner one 3–4 × 2 mm vs outer two tepals 10–15 × 10–12 mm, inner one 5–7.5 × 2–5 mm) sizes ...
Etymology: The specific epithet “pingxiangensis” refers to the type locality in Pingxiang City, Guangxi Zhuang Autonomous Region, China. Chinese name is proposed here as “凭祥秋海棠” (凭祥-refer to Pingxiang, 秋海棠-refer to Begonia).
Hou-Cheng Xi, Fu-Yang Nong, Jian-Yong Shen, Xing-Da Ma, Li-Ju Jiang and Wen-Guang Wang. 2025. Begonia pingxiangensis, A New Species of Begonia sect. Coelocentrum (Begoniaceae) from Guangxi, China. Taiwania. 70(1); 1-3. DOI: 10.6165/tai.2025.70.1
