identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
9D042DED6CB854A19A660C03C59F22A3.text	9D042DED6CB854A19A660C03C59F22A3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Oreocharis sihuiensis L. B. Ji & F. Wen 2026	<div><p>Oreocharis sihuiensis L. B. Ji &amp; F. Wen sp. nov.</p><p>Figs 1, 2, 3, 4 A, D, G</p><p>Type.</p><p>China • Zhejiang Province: Yiwu City, vouchers were made from cultivated plants at Dongya Jifeng Greenhouse, 10 May 2025 (flowering), Ling-Bo Ji, JLB 2025001 (Holotype: IBK!), introduced from Guangdong Province: Sihui City, Shigou Town, 28 April 2025 .</p><p>Diagnosis.</p><p>A species similar to Oreocharis dayaoshanioides Yan Liu &amp; W. B. Xu (in Liu et al. 2012), but can be distinguished from the latter by the adaxial leaf blade being densely pubescent with hairs 0.2–0.5 mm long (vs. sparsely to densely villous, hairs longer than 1 mm), lobes of the corolla upper lip subrounded with a rounded apex (vs. broadly ovate to orbicular-ovate with an acute apex), presence of 3 staminodes (vs. absent or 2), disc margin cleft (vs. subentire), filaments shorter, less than ca. 6.0 mm long (vs. 8.0–12.0 mm), and capsules ca. 1.0 cm long (vs. ca. 2.0 cm). (Table 1, together with the type species of Dayaoshania, now namely Oreocharis cotinifolia).</p><p>Description.</p><p>Perennial herbs. Rhizomatous stem short. Leaves all basal, petiolate; petiole 15–55 mm long, 2–4 mm in diameter, densely white pubescent with hairs 0.2–0.5 mm long on both sides; leaf blade chartaceous, 5.0–8.0 × 3.0–5.0 cm, ovate, oval, broadly elliptic to subrounded, base broadly cuneate to subrounded, sometimes slightly oblique, apex broadly acute to subrounded, margin serrulate, densely white pubescent on both sides, and densely white villous along veins abaxially; midrib depressed adaxially and prominent abaxially, secondary veins 4–6 pairs, conspicuous abaxially. Inflorescences cymes, 1–10 - flowered, 1–3 - branched; peduncle 5.0–10.0 cm long, densely purple pubescent; bracts 2, linear, ca. 6.5 × 1.3 mm, apex acute or obtuse, margin entire, more or less purple pubescent abaxially. Pedicels 0.3–1.4 cm long, densely purple pubescent. Calyx 5 - lobed almost to the base, lobes narrowly triangular, 3.5–4.5 × 0.8–1.5 mm, purple pubescent abaxially. Corolla white externally, white with rose red at the throat of upper corolla tube and yellow at the throat of lower corolla tube internally, pubescent externally, pubescent at the corolla tube internally; corolla tube ca. 4.5 mm long, cross-section at the entrance of corolla throat subrounded, ca. 3.0 mm in diameter, corolla tube base ca. 2.1 mm in diameter; limb 2 - lipped, upper lip ca. 5.0 × 9.0 mm, bifid to nearly base, lobes ca. 4.7 × 4.8 mm, subrounded, apex rounded, margin entire, lower lip ca. 7.5 × 13.5 mm, 3 - partite to nearly base, lateral lobes ca. 4.9 × 4.9 mm, rounded to broadly ovate, apex rounded, margin entire, central lobe ca. 5.8 × 6.0 mm, subrounded, apex rounded, margin entire. Stamens 2 or occasionally 1 or 3; filaments white or purplish at apex and gradually changed to yellowish at base, ca. 6.0 mm long, adnate to ca. 0.5 mm above corolla base, glabrous; anthers dorsifixed, ellipsoid, pale gray, ca. 1.2 × 0.9 mm, glabrous. Staminodes 3, white, adnate to nearly base of corolla, lateral two ca. 7.0 mm long, central one ca. 9.0 mm long, glabrous. Disc ring-like, margin cleft, yellow, ca 0.9 mm high. Pistil ca. 9 mm long; ovary ca. 3.0 mm long, ca. 1.5 mm in diameter, yellowish, glabrous or sometimes sparsely pubescent; style ca. 6.0 mm long, yellowish, glabrous; stigma bilobed, subrounded, ca. 0.4 × 0.7 mm. Capsules ca. 1.0 cm long, glabrous.</p><p>Distribution and phenology.</p><p>Oreocharis sihuiensis grows on the moist slopes or rock walls under mixed forest of evergreen broad-leaved forest and bamboo forest, at an elevation of about 100 m. It flowers from April to May and fruits from May to July.</p><p>Etymology.</p><p>Specific epithet is derived from the type locality, Sihui City.</p><p>Vernacular name.</p><p>Sì Huì Yáo Shān Jù Tái (Chinese pronunciation); 四会瑶山苣苔 (Chinese name).</p><p>Proposed IUCN conservation status.</p><p>Due to excessive human exploitation, fewer than 30 individuals of this species currently survive in the wild. The population is experiencing a continuing and rapid decline, with no recruitment or juvenile individuals observed in recent field surveys, indicating an extremely negative population trend. This species is known only from this single locality, and the area of occurrence is estimated to be less than 100 m 2. The type locality is situated near a village, characterized by frequent anthropogenic disturbance and a plant community with low species diversity. The habitat quality has been deteriorating rapidly due to ongoing human activities, with an estimated rate of habitat loss exceeding 30 % over the past decade. Additionally, this species is a well-known ethnobotanical resource, widely utilized by local villagers who harvest and process the plant for medicinal tea. Furthermore, the species is known to local residents by the vernacular name ‘ Shi Shang Lian’, meaning ‘ Lotus Born on Rock’, which frequently leads to misidentification with congeneric species — specifically, Oreocharis benthamii Clarke var. benthamii or O. benthamii var. reticulata Dunn, both of which are traditionally used in Guangdong folk medicine. These folk medicinal plants are all believed to be effective in treating liver ailments, which has consequently resulted in intensive over-collection and trade, severely compromising the survival of the species. Compounding this pressure, the surrounding bamboo forest is also experiencing localized human-induced felling (Fig. 3), further reducing available habitat and exacerbating habitat fragmentation. Based on our field surveys, the type locality population is severely fragmented, with only sparse, scattered individuals remaining. The total number is around 30 individuals, indicating a population that is barely clinging to survival. Therefore, the new species is under high threat. According to Criterion D and B 2 a, b (ii, iii, v) of the IUCN Red List Categories and Criteria, the new species is hereby preliminarily assessed as “ Critically Endangered, CR B 2 a, b (ii, iii, v); D ” (IUCN 2024).</p><p>Distribution and habitat.</p><p>This new species is currently known only from its type locality in Shigou Town, Sihui City, Guangdong Province, China. Fewer than 30 mature individuals are known to survive. It prefers shady rock outcrops in bamboo forests.</p></div>	https://treatment.plazi.org/id/9D042DED6CB854A19A660C03C59F22A3	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	Ji, Ling-Bo;Wen, Fang;Jin, Xiu-Hui;Xu, Yi-Da;Li, Bo-Heng;Tang, Bo	Ji, Ling-Bo, Wen, Fang, Jin, Xiu-Hui, Xu, Yi-Da, Li, Bo-Heng, Tang, Bo (2026): Oreocharis sihuiensis (Gesneriaceae), a critically endangered new species from Guangdong Province, China. PhytoKeys 276: 175-182, DOI: 10.3897/phytokeys.276.190710
