identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
64EF92FB29EF5C5495F845862A64093D.text	64EF92FB29EF5C5495F845862A64093D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Begonia parvibracteata X. X. Feng, R. K. Li & Z. X. Liu 2022	<html xmlns:mods="http://www.loc.gov/mods/v3">
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            <p> Begonia parvibracteata X.X.Feng, R.K.Li &amp; Z.X.Liu sp. nov.</p>
            <p> Figs 1, 2 Chinese name:  小苞秋海棠</p>
            <p>Type.</p>
            <p>
                  China Guangxi, Longzhou County (龙州县), Zhubu Town (逐卜乡),  
                <a title="Search Plazi for locations around (long 106.954994/lat 22.650833)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.954994&amp;materialsCitation.latitude=22.650833">Bannong Village</a>
                 (板弄屯),  
                <a title="Search Plazi for locations around (long 106.954994/lat 22.650833)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.954994&amp;materialsCitation.latitude=22.650833">Yinghuagu Tourist Resort</a>
                 , 22°33'51"N, 106°57'03"E, (Fig. 3), 263 m alt., in shaded environment of limestone forest,  
                <a title="Search Plazi for locations around (long 106.954994/lat 22.650833)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.954994&amp;materialsCitation.latitude=22.650833">October</a>
                 , 2021,  
                <a title="Search Plazi for locations around (long 106.954994/lat 22.650833)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.954994&amp;materialsCitation.latitude=22.650833">Xin-Xin Feng</a>
                 , Ren-Kun Li &amp; Zhi-Xian Liu (holotype: 835307, IBSC!; isotype: SYS!).  
                <a title="Search Plazi for locations around (long 106.954994/lat 22.650833)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.954994&amp;materialsCitation.latitude=22.650833">Longzhou County</a>
                 (龙州县),  
                <a title="Search Plazi for locations around (long 106.954994/lat 22.650833)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.954994&amp;materialsCitation.latitude=22.650833">Zhubu Town</a>
                 (逐卜乡),  
                <a title="Search Plazi for locations around (long 106.954994/lat 22.650833)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.954994&amp;materialsCitation.latitude=22.650833">Pona Village</a>
                 (坡那屯),  
                <a title="Search Plazi for locations around (long 106.954994/lat 22.650833)" href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=106.954994&amp;materialsCitation.latitude=22.650833">Nonggang National Nature Reserve</a>
                 , 22°39'03"N, 106°57'18"E, 190 m alt., on rock under limestone forest, 18 May 2020, Dai-Ke Tian &amp; Jinye Zhou TDK4119 (CSH!)  . 
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            <p>Diagnosis.</p>
            <p> Begonia parvibracteata morphologically resembles  B. subhowii and  B. psilophylla in rhizome and leaf characters. However, it has narrowly oblique-ovate asymmetric leaf blades, 4 (rarely 6) tepals in pistillate flowers and small (6-8  × 3-5 mm) bracts in inflorescences. These characters differ from the widely ovate leaf blades, 5 (rarely 6) tepals of pistillate flowers, and distinctly large bracts in inflorescences of  B. subhowii .  B. parvibracteata is dissimilar to  B. psilophylla in its 4 (rarely 6) tepals in pistillate flowers and asymmetric, narrowly oblique-ovate leaf blade. </p>
            <p> Begonia parvibracteata forms a monophyletic group clustered with  B. cucurbitifolia in the phylogenic tree, but the latter has nearly symmetric, 3-4 lobed leaf blade, 5-tepaled pistillate flower, definitely differing from the new species. </p>
            <p>Description.</p>
            <p> Perennial evergreen herb, monoecious, 15-30 cm tall. Rhizome creeping, ca. 8.5-12 cm long and 6-10 mm thick, internode short or not obvious; erect stem only seen at anthesis, ca. 7.5-10 cm long, internodes 1-2 (3), green to reddish-green, glabrous. Stipules brownish-red, translucent, ovate-triangular, ca. 8-10  × 4-5 mm, glabrous. Leaves 3-6 basal and 2-3 aerial, petiole yellowish-green, 18-22 cm long, glabrous; blade asymmetric, ovate to narrowly ovate, 14-16  × 7.5-9 cm; apex acuminate to caudate, base oblique-cordate; leaf margin usually almost entire or occasionally crenate; venation palmate with 6-8 primary veins, adaxially slightly concave, abaxially convex; leaf blade fleshy, abaxially pale-green, glabrous; adaxially green, glabrous. Inflorescences arising from erect stem; dichasial cymes branching one to two times, peduncle 10-12 cm long, glabrous; flowers unisexual, 3-7 flowers per inflorescences; bracts membranous, triangular to widely ovate, brownish-red, 6-8  × 3-5 mm, glabrous. Staminate flower: pedicels pale green, ca. 2-2.3 cm long, glabrous; tepals 4, outer 2 tepals ovate to circular, 13-21  × 12-20 mm, adaxially concave, pinkish-white, abaxially convex, pinkish-white, red hispid; inner 2 obovate, 10-18  × 8-12 mm, margin irregularly entire, white, glabrous; androecium cylindrical, ca. 6.6-7.5 mm across; stamens numerous, ca. 2-2.5 mm long, anthers yellow, clavate, base cuneate, ca. 1.5 mm long. Pistillate flower: pedicels pale green, ca. 2-2.6 cm long, glabrous; tepals 4, occasionally 6, white, irregularly ovate, obovate or cuneate, sub-equal, 18-20  × 10-15 mm, glabrous; ovary yellowish-green, trigonous-ellipsoid, 11-12  × 5-6 mm (wings excluded), glabrous; 2-loculed, placentae axillary, placentae bifid per locule; styles 2, fused at base, yellow, ca. 5-6 mm long, apically Y-shaped, stigma U-shaped, spirally twisted. Capsules nodding, trigonous-ellipsoid, ca. 11-13  × 5-6.5 mm (wings excluded), yellowish-green, glabrous, unequally 3-winged, abaxial wing triangular to ligulate, ca. 10-13 mm long; lateral wings lunate, 3-6 mm long. </p>
            <p>Distribution and habitat.</p>
            <p>Currently known from four localities in Longzhou County and Daxin Countym Guangxi, China. It usually grows on rocks or rock cracks in limestone under forest.</p>
            <p>Phenology.</p>
            <p>Flowering September-October, fruiting October-December.</p>
            <p>Etymology.</p>
            <p> The specific epithet " parvibracteata " refers to the short small bracts of the new species. The Chinese name is given as  “小苞秋海棠” (  Begonia with small inflorescence bracts). </p>
            <p>Conservation status.</p>
            <p> There are three populations with approximately 1000 individuals found in Longzhou County. Another one population with approximately 500 individuals is distributed in the Encheng National Nature Reserve, Daxin County. Some plants of this begonia are over-collected and sold in the local medicinal herb market of Longzhou County. According to the IUCN Red List Categories and Criteria (IUCN 2022),  B. parvibracteata should be assessed as "Vulnerable (VU B1, B2 ab (i, iv, v), D2)" due to its narrow distribution and the disturbance by human activities. </p>
            <p>Molecular analysis</p>
            <p> The aligned matrix of the ITS sequence data was 727 bp long. The result of Bayesian Inference analysis is shown in Fig. 4.  Begonia sect. Platycentrum appears monophyletic with a high Bayesian posterior probability (bpp = 1) (Fig. 4). The three samples of the putative new species form a monophyletic group clustered with  B. cucurbitifolia (bpp = 0.89).  Begonia subhowii with the highest morphological similarity to  B. parvibracteata formed another subclade. </p>
            <p> The nodes with bpp &lt;0.50 have been collapsed. Sectional placement of taxa is indicated by the following abbreviations: Coe (  Coelocentrum ), Dip (  Diploclinium ), Pla (  Platycentrum ), Rei (  Reichenheimia ) and Pel (  Peltaugustia ). The numbers after the species names indicate different populations. The samples of the new species are marked with stars. </p>
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	https://treatment.plazi.org/id/64EF92FB29EF5C5495F845862A64093D	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	Feng, Xin-Xin;Huang, Xiao-Feng;Huang, Yu-Ni;Liu, Zhi-Xian;Li, Ren-Kun;Zhou, Jin-Ye;Guo, Wei;Chen, Xiao-Yan;Tian, Dai-Ke	Feng, Xin-Xin, Huang, Xiao-Feng, Huang, Yu-Ni, Liu, Zhi-Xian, Li, Ren-Kun, Zhou, Jin-Ye, Guo, Wei, Chen, Xiao-Yan, Tian, Dai-Ke (2022): Begonia parvibracteata, a new species in Begonia sect. Platycentrum (Begoniaceae) from Guangxi of China, based on morphological and molecular evidence. PhytoKeys 214: 27-38, DOI: http://dx.doi.org/10.3897/phytokeys.214.90004, URL: http://dx.doi.org/10.3897/phytokeys.214.90004
