identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
7308B2AAD05F5D4EBCF32BA656D4C2B9.text	7308B2AAD05F5D4EBCF32BA656D4C2B9.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Begonia angustibracteata D. K. Tian & R. C. Hu 2025	<div><p>Begonia angustibracteata D. K. Tian &amp; R. C. Hu sp. nov.</p><p>Fig. 1, Table 1 Chinese name: 狭苞秋海棠</p><p>Diagnosis.</p><p>The new species is mostly similar to the green-leaved individuals of  B. fimbristipula Hance (Hance 1883), but differs mainly by its leaves sparsely hairy (vs. densely hairy), with a bracteole at the top of the pistillate flower pedicel (vs. without), larger (10–12 × 12–13 vs. 6–8 × 9–11 mm) outer tepals of pistillate flower, placentae unilamellate (vs. bilamellate), and later flowering (June – July vs. April – May).</p><p>Type.</p><p>China. • Guangxi: Guiping (桂平) City, Xishan (西山) Town, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.88583&amp;materialsCitation.latitude=23.429167" title="Search Plazi for locations around (long 109.88583/lat 23.429167)">Bitan</a> (碧滩) Village (Fig. 2), near streams or on wet or slightly dry rock walls, 23°25'45"N, 109°53'9"E, elev. 38 m, dried fruits of the previous year, April 21, 2024, Daike Tian, Jinye Zhou, Renchuan Hu TDK 5598 (holotype: CSH 0214187; isotypes: CSH 0214184, 0214185, 0214186, CSH!)  .</p><p>Description.</p><p>Herb perennial, 2–20 cm tall, monoecious, tuber spherical, 8–25 mm in diameter. Leaves usually 1 per plant, sometimes 2 (more common in large plants); membranous, slightly asymmetric to near symmetrical, cordate, oval or ovate, 5–38 × 4–32 cm, wide side 2.2–17.5 cm, narrow side 2–15 cm, adaxially green, covered with very short rough hairs, hairs ≤ 0.5 mm, venation palmate, veins 10–11 (– 12), concave; abaxially grayish-green, veins convex, covered with grayish-white villous, hairs 1–5 mm long, longer at the base of primary veins; margin heavily serrate and short grayish-green hairy, hairs ca. 1 mm long, apex acute and often coarsely toothed. Petioles green, light green or pink, 1.5–20 cm long, 1.5–9 mm thick, light green longitudinal spotted and grayish-white villous, hairs ≤ 6 mm long, or sparsely pale-white hairs on the upper of petioles; petiole base grooved. Inflorescence: dichasial cyme, 1 per plant, occasionally 2, 5–33 cm long; peduncle 3–23 cm long, 2–6 mm thick, reddish-brown, glabrous, 3–10 flowers per inflorescence. Bracts nearly persistent, nearly linear, 3–6 × 1–2 mm, basal bracts with 3 red longitudinal stripes, upper bracts with red midribs. Staminate flower: pedicel light green, usually gradually turning pink downwards, glabrous, 10–50 mm long, 1 mm thick; flower 16–23 × 18–25 mm; tepals 4, glabrous, outer 2 ovate, 8–12 × 8–12 mm, adaxially pink, slightly light green on the top edge, depressed and slightly thick in central part; abaxially color slightly lighter, nearly pinkish-white; inner 2 narrowly oblanceolate, pinkish-white, 9–12 × 4–5 mm, lighter and thinner than outer tepals; androecium nearly capitate, actinomorphic, 1.5–2 mm long, 2–3 mm wide; stamens 27–45, filaments basally fused, stamen column nearly 2 mm long, filaments and anthers nearly 1 mm long, fragrance pleasant. Pistillate flower: pedicel light green, glabrous, 20–24 mm long, ca. 1 mm thick, with a bracteole on the top of pedicel or below ovary, 4–5 × ca. 1.5 mm; flower 13–21 × 12–14 mm, tepals 3, glabrous, outer 2 ovate, pinkish-white, slightly flat, the middle and lower parts gradually turning dark pink, 10–12 × 12–13 mm; inner 1 oblanceolate; pistils 4–5 × 3–4 mm, styles 3, nearly free, ca. 2 mm long; ovary 3 locular, placentation axile, placentae unilamellate. Fruit: stalk 10–28 mm long, ca. 1 mm thick; capsule 6–9 × 4–6 mm, unequally 3 - winged, large one nearly triangular or rectangular-triangular, 10–18 × 9–19 mm, lateral wings sickle-shaped, 1.5–3 × 8–10 mm.</p><p>Phenology.</p><p>Flowering June – July, fruiting July – August.</p><p>Etymology.</p><p>The epithet “ angustibracteata ” refers to the narrow bracts of this new species. The Chinese name is given as “ 狭苞秋海棠 ”.</p><p>Distribution and habitat.</p><p>The new species has been found only in three places restricted to Guiping City and Hengzhou City of Guangxi (Fig. 2). It grows on rock cliffs or in shaded places of valleys at an altitude of 30– 300 m.</p><p>Conservation status.</p><p>The new species has been found only in three places of Guiping and Hengzhou City (Fig. 2), the extent of occurrence is about 210 km 2 and the area of occupancy is about 12 km 2. Although one of three locations has a large number of individuals (&gt; 10000 mature individuals, and many seedlings) and new populations will be possibly discovered in other places in the future. The conservation status of this species is assessed as Endangered (EN) (B 1 ab (i-v) + 2 ab (i-v)) due to possibly partial loss of habitats caused by road construction or maintenance, following Guidelines for Using the IUCN Red List Categories and Criteria (IUCN 2024).</p><p>Additional specimens examined.</p><p>China. • Guangxi: Guiping City, Xishan Town, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.88583&amp;materialsCitation.latitude=23.429167" title="Search Plazi for locations around (long 109.88583/lat 23.429167)">Bitan Village</a>, near streams on wet or slightly dry rock walls, or in crevices, 23°25'45"N, 109°53'9"E, elev. 38 m, flowering, July 26, 2023, Renchuan Hu, Xincheng Qu 450881230726019 (GXMI!) ; •  ibid., 23°25'58"N, 109°53'23"E, elev. 57 m, few dried fruits of the previous year, April 21, 2024, Daike Tian, Jinye Zhou, Renchuan Hu TDK 5599 (CSH!) . •   Guiping City, Jiangkou (江口) Town, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=110.22889&amp;materialsCitation.latitude=23.682499" title="Search Plazi for locations around (long 110.22889/lat 23.682499)">Litang</a> (理塘) Village, growing on rock wall or in crevices between rocks of Danxia landform, 23°40'57"N, 110°13'44"E, elev. 299 m, April 21, 2024, few dried fruits of the previous year, Daike Tian, Jinye Zhou, Renchuan Hu TDK 5601 (CSH!) ; •   Hengzhou (横州) City, Zhenlong (镇龙) Town, growing on wet rock wall or in rock crevices, along a river valley in  Jiulong Waterfall Group National Forest Park (九龙瀑布群国家森林公园), 23°3'23'N, 109°13'39"E, elev. 264 m, few dried fruits of the previous year, April 25, 2024, Daike Tian, Jinye Zhou, TDK 5639 (CSH!) ; •  ibid., 23°3'0"N, 109°13'39"E, elev. 237 m, without flower, April 25, 2024, Daike Tian, Jinye Zhou, TDK 5642 (CSH!) .</p></div>	https://treatment.plazi.org/id/7308B2AAD05F5D4EBCF32BA656D4C2B9	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.		Pensoft via Plazi	Hu, Renchuan;Zhou, Jinye;Zhao, Ziyi;Lai, Kedao;Wu, Yannong;Tian, Daike	Hu, Renchuan, Zhou, Jinye, Zhao, Ziyi, Lai, Kedao, Wu, Yannong, Tian, Daike (2025): Two new tuberous species of Begonia (Begoniaceae) from Guangxi, China. PhytoKeys 256: 119-129, DOI: 10.3897/phytokeys.256.145725
E576085620B558168EEB5195C333F84C.text	E576085620B558168EEB5195C333F84C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Begonia baishishanensis R. C. Hu & D. K. Tian 2025	<div><p>Begonia baishishanensis R. C. Hu &amp; D. K. Tian sp. nov.</p><p>Fig. 3, Table 1 Chinese name: 白石山秋海棠</p><p>Diagnosis.</p><p>Begonia baishishanensis is most similar to  B. danxiaensis D. K. Tian &amp; X. L. Yu (Tian et al. 2019), but differs in its larger (3–21 × 2.6–20.3 cm vs. 2–13 × 1.5–13.5 cm) and thicker (vs. thinner) leaves, hairy (vs. nearly glabrous) bract margins, larger outer tepals of staminate flower (13–17 × 10–14 mm vs. 4–11 × 3–10 mm) and pistillate flower (10–13 × 11–15 mm vs. 3–9 × 4–9 mm), more (47–88 vs. 10–38) stamens, and placentae bilamellate (vs. unilamellate). The species is also similar to  B. fimbristipula (Hance, 1883) belonging to B. section  Diploclininum, but mainly differs by its larger (3–21 × 2.6–20.3 cm vs. 4–13 × 4.8–8.5 cm) and thicker (vs. thinner) leaves, shorter (≤ 0.5 mm vs. ≥ 1 mm long) hairs on adaxial leaf surface, larger outer tepals of pistillate flower (13–17 × 10–14 mm vs. 8–13 × 8–10 mm) and pistillate flower (10–13 × 11–15 mm vs. 6–8 × 9–11 mm).</p><p>Type.</p><p>China. • Guangxi; Guiping City, Madong (麻垌) Town, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=110.20528&amp;materialsCitation.latitude=23.702223" title="Search Plazi for locations around (long 110.20528/lat 23.702223)">Baishi</a> (白石) Village (Fig. 2), growing on rock walls or with grasses of Danxia landform mountain, 23°42'8"N, 110°12'19"E, elev. 383 m, late flowering, April 21, 2024, Daike Tian, Jinye Zhou, Renchuan Hu TDK 5596 (holotype: CSH 0214176; isotypes: CSH 0214177, 0214178, 0214179, CSH!)  .</p><p>Description.</p><p>Herb perennial, 3–15 cm tall, monoecious, tuber spherical, usually 2–3 connected, 8–30 mm in diameter; erect stem absent or with 1 at anthesis, 0.2–4 cm long, 3–8 mm thick. Stipules long triangular, ca. 6 mm long, covered with grayish-white long rough hairs. Leaves usually 1, rarely 2 per plant, blade cordate, nearly symmetrical, 3–21 × 2.6–20.3 cm, wide side 1.4–10.1 cm, narrow side 1.2–10.1 cm; adaxially green, rarely dark green, covered with grayish-white short rough hairs, hairs usually ≤ 1 mm long, venation palmate, veins 9–10, concave; abaxially gray-green, rarely purple-red, grayish-white villous, hairs 1–5 mm long, longer (up to 4 mm) at the base of primary veins, primary veins convex, secondary veins slightly convex; lobes of leaf base valvate to acute angled or slightly overlapped, margin with few serrate and short cilia, apex acuminate or short acuminate. Petioles green, rarely red, 0.8–18 cm long, 1.2–6 mm thick, grayish-white villous, hairs up to 4 mm long, denser on the top position. Inflorescence: dichasial cyme, basal, usually 1, rarely 2 per plant, 4–40 cm long, peduncle 1.5–24 cm long, 0.8–8 mm thick, nearly glabrous, 2–15 flowers per inflorescence. Bracts light green, long triangular to nearly lanceolate, 4–11 × 1.5–5 mm, margin ciliate. Staminate flower: pedicel greenish-white with pink, glabrous, 10–19 mm long, 0.6–0.8 mm thick; flower 26–34 × 25–31 mm, tepals 4, pink, coloration even, glabrous; outer 2 ovate or oval, 13–17 × 10–14 mm; inner 2 nearly obovate or obovate-lanceolate, 11–19 × 7–9 mm; androecium nearly capitate, actinomorphic, 3–4 × 4–5 mm; stamens 47–88; filaments base fused, connate part ca. 1.5 mm long, free part 1–1.5 mm long, anthers 0.8–1 mm long. Pistillate flower: pedicel pink, glabrous, 8–13 mm long, 0.6–0.8 mm thick; flower 22–26 × 12–19 mm, tepals 3, pink, coloration nearly even, glabrous; outer 2 broadly ovate or ovate, slightly flat, 10–13 × 11–15 mm; inner 1 obovate or obovate-lanceolate, 6–12 × 3–7 mm; pistils 4–5 × 3–5 mm; styles 3, nearly free, 1.5–2 mm long; ovary 3 locular, placentation axile, placentae bilamellate. Fruit: stalk 11–20 mm long, ca. 1 mm thick, capsule 8–11 × 6–9 mm, unequally 3 - winged, larger one nearly rectangular or triangular-rectangular, 11–15 × 10–15 mm, apex nearly obtuse or pointed; smaller wings sickle-shaped, 1–2 × 7–16 mm.</p><p>Phenology.</p><p>Flowering March to April, fruiting April to May.</p><p>Etymology.</p><p>The epithet “ baishishanensis ” refers to Baishishan, a mountain name of Guiping City and the type locality of this species. The Chinese name is given as “ 白石山秋海棠 ”.</p><p>Distribution and habitat.</p><p>One population including four subpopulations of  B. baishishanensis are found on rock walls or grass, or in rock crevices of Danxia landform cliff of Baishishan of Guiping City, Guangxi, China (Fig. 2).</p><p>Conservation status.</p><p>The new species is only found in the type locality, the extent of occurrence is about 2 km 2 and the area of occupancy is less than 2 km 2, and has only one population (&lt;2000 mature individuals, and few seedlings). Due to its unique habitat and negative influence by tourism, its living space is shrinking, currently it is assessed as Critically Endangered (CR) (B 1 ab (i – v) + 2 ab (i – v)) following Guidelines for Using the IUCN Red List Categories and Criteria (IUCN 2024). Therefore,  B. baishishanensis should be suggested to be included in the future List of China National Protected Wild Plants. However, further investigation is necessary on its actual distribution area and the number of populations and individuals.</p><p>Additional specimens examined.</p><p>China. • Guangxi: Guiping City, Madong Town, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=110.20528&amp;materialsCitation.latitude=23.702223" title="Search Plazi for locations around (long 110.20528/lat 23.702223)">Baishi Village</a>, growing on rock wall or grass of Danxia landform mountain, 23°42'8"N, 110°12'19"E, elev. 383 m, peak flowering, March 25, 2024, Renchuan Hu Xincheng Qu, TDK 5596 (CSH!)  .</p></div>	https://treatment.plazi.org/id/E576085620B558168EEB5195C333F84C	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.		Pensoft via Plazi	Hu, Renchuan;Zhou, Jinye;Zhao, Ziyi;Lai, Kedao;Wu, Yannong;Tian, Daike	Hu, Renchuan, Zhou, Jinye, Zhao, Ziyi, Lai, Kedao, Wu, Yannong, Tian, Daike (2025): Two new tuberous species of Begonia (Begoniaceae) from Guangxi, China. PhytoKeys 256: 119-129, DOI: 10.3897/phytokeys.256.145725
