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| Begonia shunzhii D.K.Tian, Z.Y.Guo & X.X.Bai, in Guo, Bai, Zhou, Chen, Li et Tian, 2025. |
Abstract
Begonia shunzhii, a new species of Begonia sect. Reichenheimia from Guizhou Province of China is described and illustrated. It mostly resembles B. qingchengshanensis and B. puerensis in the same section but considerably differs from the latter two in some characteristics. A detailed morphological comparison of the three species is provided. According to the Guidelines for Using IUCN Red List Categories and Criteria, the conservation status of new species is assessed as Endangered (EN B1ab(i,ii,iii,iv,v)).
Begonia, New taxon, Karst landform, Morphology, Conservation status, Guizhou, China, Eudicots
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| Habitat, habit and morphology of Begonia shunzhii D.K.Tian, Z.Y.Guo & X.X.Bai A, B. Habitat; C–E. Habit in different locations; F. Stipule; G. Adaxial leaf surface showing short bristles; H. Abaxial leaf surface; I. Bracts (left: side view, right: back view); J. Front (left two) and back (right) views of staminate flowers; K. Androecium and stamens; L. Front and side views of pistillate flowers; M. Side view of immature fruits; N. Cross-section of ovary showing placentae. (Photos A–C, G, H, J-left, L by Daike Tian; D, J-right two, K, M by Zhiyou Guo, F, I, N by Xinxiang Bai, E by Meng Dong). |
Begonia shunzhii D.K.Tian, Z.Y.Guo & X.X.Bai, sp. nov.
§ sect. Reichenheimia
(顺志秋海棠) (shùn zhì qiū hǎi táng)
Type:—CHINA. Guizhou Province, Kaiyang County (开阳县), Nanjiang town (南江乡), Nanjiang Grand Valley (南江大峡谷), ..., alt. 760 m, ...
Diagnosis:—Begonia shunzhii is mostly similar to B. qingchengshanensis Li et al. (2018: 198) but differs mainly by its smaller (2–3 × 1–1.5 mm vs. 3–7 × 2–5 mm) stipules with ciliate (vs. entire) margins without keel (vs. keeled); shorter (1.5–10.5 cm vs. 11–19 cm) petioles, leaves usually greenish-white-spotted (vs. very rarely spotted) and adaxially sparsely short-bristled and non-waxy (vs. subglabrous and waxy), smaller (2–4 × 0.5–2 mm vs. 4.5–5.5 × 3–4.5 mm) bracts, narrowly oblong to sublinear (vs. triangular or ovate-triangular), shorter (8–11 mm vs. 9–25 mm) pedicels, outer tepals ovate to subcircular (vs. narrowly to broadly ovate), smaller (5–9 × 2–3 mm vs. 7−12 × 3−5 mm) inner tepals of staminate flowers, and valvate (vs. separated) two sides of stigmas (Table 1).
Zhi-You GUO, Xin-Xiang BAI, Xing-Xue ZHOU, Zhi-Lin CHEN, Yu-Hui LI and Dai-Ke TIAN. 2025. Begonia shunzhii (sect. Reichenheimia, Begoniaceae), A New Species from Guizhou, China. Phytotaxa. 728(2); 220-226. DOI: doi.org/10.11646/phytotaxa.728.2.12 [2025-11-12]
