identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03D887A2C65A2C7EFF02A4B12DCEF3E8.text	03D887A2C65A2C7EFF02A4B12DCEF3E8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Begonia fuyangii D. K. Tian, W. G. Wang & H. C. Xi. A - C 2025	<div><p>Begonia fuyangii D.K.Tian, W.G.Wang &amp; H.C.Xi, sp. nov. § Coelocentrum (âṻäaeDz) (Figs. 1 &amp; 2)</p><p>Diagnosis:—The new species is mostly morphologically similar to Begonia yizhouensis D.K.Tian, B.M.Wang &amp; Y.Tong (Tong et al. 2019: 60) in leaf shape, margin, and number of staminate and pistillate flower tepals, but can be distinguished by its stipules with a hairy dorsal ridge (vs glabrous), leaf blade adaxially green to dark green, sometimes with light green or grayish-white patches and/or spots between veins, abaxially green to light reddish-brown (vs adaxially dark to deep green between main veins, light-green or grayish-white bands along veins, abaxially purple red between veins), abaxially densely fibrillose along veins when young, becoming sparsely fibrillose when mature (vs abaxially glabrous or sparsely puberulous), staminate flower smaller (1.5–3.1 × 1.2–2.3 cm vs 2.1–5 × 2–3.8 cm), and ovary 3-loculed, placentation axile (vs 1-loculed, placentation parietal).</p><p>Type:— CHINA. Guangxi Zhuang Autonomous Region: Chongzuo City (崇左ḿ), Ningming County (÷ẹ县), Chengzhong Town (Ẇ 中Dz), Tuolong Village (kfiffl), Gengchang (埂ẗ), on rock surface or between rock crevices under limestone forest, 22°15ʹN, 107°0ʹE, elev. 182 m, fruits near ripe, 11 November 2023, Dai-Ke Tian, Ren-Chuan Hu, Jin-Ye Zhou, Fu-Yang Nong, TDK5531 (holotype: CSH!; syntypes: CSH!) .</p><p>Perennial herb, rhizomatous, monoecious, to 20 cm tall. Rhizome creeping, unbranched to branched 1 or 2 times, brownish-red to green when young, grayish-white when mature, 3–18 cm long, 5–16 mm in diameter, internodes very short or inconspicuous, aerial stem absent. Stipules yellowish-green to light reddish-brown, triangular, 4–11 × 3–11 mm, abaxially keeled, dorsal ridge hairy, hairs 3–8 mm long, grayish-white, reddish-brown or rusty, awn at apex, 5–8 mm long, margin subentire or ciliate. Leaves basal. Petioles reddish-brown, cylindrical, not grooved, 4–22.5 cm long, 2–8 mm in diameter, densely grayish-white villous when young, becoming sparsely rusty villous when mature, hairs 5–8 mm long. Leaf blades subcoriaceous, ovate, asymmetric, 5–24 × 3–15 cm; adaxially green to dark green, occasionally blackish-green, sometimes with light green or grayish-white patches and/or spots between veins, subglabrous, sparsely inconspicuously verrucose, venation palmate, primary veins 7–9, slightly concave; abaxially green to light reddish-brown, veins distinct, convex, densely silvery white fibrillose along veins when young, becoming sparsely rusty fibrillose when mature; base slightly overlapped when young, becoming valvate to separated when mature, apex acuminate to shortly caudate; margin entire to subentire, densely silvery white villous when young, becoming glabrous when mature. Cymes basal, dichasial, 2–33-flowered, 10–23 cm long, branched 1 or 2 times; peduncles green to reddish-brown, 7–20 cm long, 1.5–5 mm in diameter, puberulent to subglabrous. Bracts yellowish-green to light reddish-brown, broadly ovate to subrotund, basal bracts 5–9 × 4–8 mm, upper bracts 3–6 × 2–5 mm, abaxially glabrous, margin ciliate. Staminate flower: pedicel light green, pinkish-white to white, 7–24 mm long, ca. 1 mm in diameter, puberulent; flower size 15–31 × 12–23 mm; tepals 4, white, glabrous; outer 2 broadly ovate to subrotund, 7–16 × 7–13 mm; inner 2 narrowly ovate, 6–12 × 2–4 mm; androecium nearly actinomorphic, slightly upward-tilted, 3–5 mm long, 4–7 mm in diameter; stamens 26–50; filaments free, 1–3 mm long; anthers triangular, ca. 1 mm long, 1 mm wide, apex slightly concave. Pistillate flower: pedicel pinkish-white to white, 1–2 cm long, ca. 1 mm in diameter, puberulent; flower size 16–27 × 12–19 mm; tepals 3, white, glabrous; outer 2 broadly ovate to subrotund, 7–15 × 9–16 mm; inner 1 oblong, 6–10 × 2–5 mm; pistil 4–6 mm long, 5–7 mm in diameter; styles 3, fused at base; stigmas 2, spiraled; ovary subglabrous, 3-loculed, placentation axile, placentae 2 per locule. Capsules 9–18 × 4–6 mm, nodding, subglabrous, unequally 3-winged; abaxial wing 3.5–8 × 8–17 mm; lateral wings shorter, 1.5–5 × 8–15 mm.</p><p>Phenology:— Begonia fuyangii was observed flowering in March to May and July to October, fruiting in April to July and September to November in cultivation conditions, and was observed fruiting October to November in the wild.</p><p>Distribution and ecology:— Begonia fuyangii is known sporadically distributed near the boundary between Ningming County and Pingxiang City in southern Guangxi of China. It was found growing on cliff or rock surface and between rock crevices under subtropical evergreen broad-leaved forests or bushes, at elevation of 180–500 m a.s.l.</p><p>Etymology:— The specific epithet “ fuyangii ” is in honor of Fuyang Nong, who contributed to the resources investigation of Begonia in Guangxi, and was the first person to discover this species. Chinese name is “ âṻäae Dz ”.</p><p>Additional specimens examined (paratypes):— CHINA. Guangxi: Chongzuo City (崇左ḿ), Ningming County (÷ẹ县), Tuolong Town (currently Chengzhong Town) (kfiDz, ※为Ẇ中Dz), Zhulian Village (flŭffl), Baliantun (Áέψ), in bushes, 22°13ʹN, 107°2ʹE, elev. 261 m, 4 November 2013, Hui-Zhen Lu, Hai-Feng Cen &amp; Hai-Peng Yang, 451422131104034LY (GXMG) ; Ningming County (÷ẹ县), Chengzhong Town (Ẇ中Dz), Nonglong Village (ỊĽffl), under broad-leaved forest, 22°11ʹN, 106°59ʹE, elev. 268 m, 26 December 2014, Bao-You Huang, Yue-Ying Xie &amp; Qian-Ping Chen, 451422141226030LY (GXMG) ; Ningming County (÷ẹ县), <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=107.05&amp;materialsCitation.latitude=22.233334" title="Search Plazi for locations around (long 107.05/lat 22.233334)">Nonggang Nature Reserve (ỊÑ保ṕ区), Longrui Protection Station (ĽK保ṕü)</a>, on cliff or rock surface under forest, 22°14′N, 107°3′E, elev. 270 m, 22 May 2020, Dai-Ke Tian &amp; Jin-Ye Zhou, TDK4150 (CSH) ; Pingxiang City (凭ṅḿ), Xiashi Town (夏ƋDz), <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.95&amp;materialsCitation.latitude=22.166666" title="Search Plazi for locations around (long 106.95/lat 22.166666)">Yaoxiatun (咬夏ψ), Pochazu (坡ëffi)</a>, on cliff or rock surface or between rock crevices under limestone forest, 22°10′N, 106°57′E, elev. ca. 400 m, 21 May 2020, Dai-Ke Tian, Jin-Ye Zhou &amp; Fu-Yang Nong, TDK4145, 4146 (CSH!) .</p><p>Conservation status:— Begonia fuyangii is currently known only 3 populations with several subpopulations. Each subpopulation has no more than 50 individuals. The total number of mature individuals is less than 100, and some plants are on the brink of death due to drought. The extent of occurrence (EOO) is about 200 km 2 (&lt;5000 km 2) and the area of occupancy (AOO) is about 15 km 2 (&lt;500 km 2). Therefore, based on the current data, we assessed the new species as Endangered (EN) (B1+2ab(iii,v); C2a(i)) following the IUCN Red List Categories and Criteria (IUCN Standards and Petitions Committee 2024).</p><p>Notes:— Begonia fuyangii also resembles B. jingxiensis D.Fang &amp; Y.G.Wei (Fang et al. 2004: 172) in leaf size and shape and having a 3-locular ovary, placentation axile, but differs from it in stipules triangular (vs ovate or broadly ovate), leaf blade adaxially green to dark green, sometimes with light green or grayish-white patches and/or spots (vs adaxially green, dark green, or adorned with a whitish or pale horseshoe-shaped maculation) between veins, margin entire to subentire (vs irregularly dentate or denticulate, long ciliate), bracts broadly ovate to subrotund (vs oblong to elliptic), staminate flower tepals 4, stamens 26–50 (vs tepals 2(–4), stamens 18–30) and pistillate flower tepals 3 (vs tepals 2). Detailed morphological comparison of B. fuyangii, B. yizhouensis and B. jingxiensis is provided in Table 1.</p></div>	https://treatment.plazi.org/id/03D887A2C65A2C7EFF02A4B12DCEF3E8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Xi, Hou-Cheng;Zhou, Jin-Ye;Nong, Fu-Yang;Li, Ren-Kun;Shen, Jian-Yong;Tian, Dai-Ke;Wang, Wen-Guang	Xi, Hou-Cheng, Zhou, Jin-Ye, Nong, Fu-Yang, Li, Ren-Kun, Shen, Jian-Yong, Tian, Dai-Ke, Wang, Wen-Guang (2025): Begonia fuyangii, a new species of Begonia sect. Coelocentrum (Begoniaceae) from Guangxi, China. Phytotaxa 730 (1): 82-88, DOI: 10.11646/phytotaxa.730.1.6, URL: https://doi.org/10.11646/phytotaxa.730.1.6
