identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
5DF5DC9ED9865637AA202B9DD5F58A93.text	5DF5DC9ED9865637AA202B9DD5F58A93.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Sinosenecio tongziensis R. B. Zhang, Tan Deng & Ying Liu 2025	<div><p>Sinosenecio tongziensis R. B. Zhang, Tan Deng &amp; Ying Liu sp. nov.</p><p>Figs 1, 2</p><p>Type.</p><p>China • Guizhou Province, Tongzi County, Guancang Town,  Xianrenshan Mountain, elev. 1,200–1,300 m, growing on slopes beneath forests in karst areas, 27 April 2020, Chong-Bo Ma ZRB 1607 (fl.) (holotype: ZY!; isotype: PE!) , •  5 May 2024, Ren-Bo Zhang ZRB 2661 (fl.) (paratype: ZY!, SCFI!), •  25 May 2024, Ren-Bo Zhang ZRB 2676 (fr.) (paratype: ZY!) .</p><p>Diagnosis.</p><p>Resembles  S. changii in the subscapigerous habit, ovate-oblong and pinnately veined leaf lamina, and simple to compound terminal corymbs, but differs by membranous leaf lamina (vs. papery), 8–10 lateral veins (vs. 10–18), and stems and leaves pubescent with 2–5 mm long, uniseriate, spreading hairs (vs. sparsely white arachnoid to densely white tomentose) (Table 1).</p><p>Description.</p><p>Herbs, scapigerous. Fresh rhizomes 6–16 mm in diam., clad in persistent brown petiole bases. Stems 1 to 3, erect, scapiform, 15–40 cm tall, ribbed, villous with 2–5 mm long, uniseriate, spreading hairs. Leaves several, radical, rosulate, densely villous as the stems; petiole 3–9 cm long; blade (broadly) ovate, obovate, or ovate-oblong, 4–14 × 3–10 cm, membranous, villous, densely so along veins, pinnately veined, lateral veins 4–5 pairs, base cordate, margin repand with mucronulate teeth, long ciliate. Capitula 4–29, arranged in terminal simple to compound corymbs; peduncles 1–5 cm long, slender, (sparsely) pubescent, with 3–20 mm long, linear or linear-spatulate bracts. Involucres campanulate, 4–7 × 4–7 mm, not calyculate; phyllaries ca. 13, lanceolate, oblanceolate or subelliptic, 4–6 × 1–1.6 mm, herbaceous with membranous margins, abaxially pubescent with uniseriate, spreading hairs, apically acuminate, ciliate at the apex and on upper margin. Ray florets 10–13; corolla tube 2.5–3.5 mm long, glabrous; ray yellow, oblong, 7–10 × 1.2–2.2 mm, 4 - veined, apically 3 - denticulate. Disk florets many; corolla yellow, 4–6 mm long, with 2–3 mm tube and campanulate limb; lobes ovate-lanceolate, ca. 0.8 mm long, apically acute. Anthers oblong, ca. 1.1 mm long, base obtuse to rounded, appendages lanceolate. Styles ca. 2.5 mm long in ray florets and 4–4.5 mm long in disk florets, branches recurved, ca. 0.8 mm long. Achenes cylindric, 1.6–2.0 mm long, inconspicuously ridged, glabrous. Pappus capillary-form, uniform, white, persistent, 2.4–4.0 mm long.</p><p>Floral micromorphological characters.</p><p>The filament collar of  S. tongziensis consisted of uniformly sized cells (Fig. 3 E), and the anther endothecial cell wall thickenings were polarized and radial (Fig. 3 F), lending strong support for the phylogenetic affiliation of  S. tongziensis in subtribe  Tephroseridinae (see below).</p><p>Phenology.</p><p>Flowering from April to May, fruiting from May to June.</p><p>Etymology.</p><p>The specific epithet is derived from the type locality, Tongzi County, Guizhou Province, China.</p><p>Vernacular name.</p><p>The proposed Chinese name is “ 桐梓蒲儿根 ”, pronounced as “ tóng zǐ pú ér gēn ”.</p><p>Distribution and ecology.</p><p>The new species is endemic to Guizhou Province and is currently known only from the type locality, Xianrenshan Mountain, Tongzi County. It grows on slopes beneath the forests in karst areas at elevations of 1,200 –1,300 m.</p><p>Conservation status.</p><p>Sinosenecio tongziensis is currently recorded only at the type locality. Thousands of individuals are scattered across the mid-slope and at the base of the mountain, with approximately 600 to 700 mature individuals. Given its narrow distribution and relatively low number of mature plants,  S. tongziensis may be more appropriately categorized as vulnerable (VU) according to the IUCN Red List Categories and Criteria (IUCN Standards and Petitions Committee 2022).</p><p>Phylogenetic affiliation.</p><p>In the phylogenetic tree,  Nemosenecio and  Tephroseris were resolved as monophyletic (Fig. 4). Together with some species of  Sinosenecio, these genera constituted a well-resolved clade representing subtribe  Tephroseridinae (Fig. 4), conforming to previous studies (Wang et al. 2009; Ren et al. 2017; Zou et al. 2020). Despite its close resemblance to  S. changii,  S. tongziensis instead formed a weakly supported lineage (PP = 0.6) with  S. bodinieri (Vaniot) B. Nordenstam,  S. confervifer (H. Léveillé) Y. Liu &amp; Q. E. Yang,  S. nanchuanicus Z. Y. Liu, Y. Liu &amp; Q. E. Yang, and  S. globiger var. adenophyllus C. Jeffrey &amp; Y. L. Chen (Fig. 4). It can be easily distinguished from these related species by the pinnately veined leaves (vs. palmately).</p></div>	https://treatment.plazi.org/id/5DF5DC9ED9865637AA202B9DD5F58A93	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	Zhang, Ren-Bo;Deng, Tan;Liu, Ying;Xie, Da-Jun;Wei, Ruo-Xun;He, Lin;Dou, Quan-Li;Qian, Zheng-Min	Zhang, Ren-Bo, Deng, Tan, Liu, Ying, Xie, Da-Jun, Wei, Ruo-Xun, He, Lin, Dou, Quan-Li, Qian, Zheng-Min (2025): Sinosenecio tongziensis (Asteraceae), a new species from north Guizhou, China. PhytoKeys 252: 187-196, DOI: 10.3897/phytokeys.252.141719
