identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
BAC42E467ABD5CB6800E7F39228ABD55.text	BAC42E467ABD5CB6800E7F39228ABD55.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Primula xingyiensis Z. K. Wu & C. Y. Deng 2026	<div><p>Primula xingyiensis Z. K. Wu &amp; C. Y. Deng sp. nov.</p><p>Figs 1, 2, 3</p><p>Diagnosis.</p><p>The new species is most similar to P. intanoensis and P. calyptrata, which are also long-styled homostylous species within this section, all sharing cordate leaves with long petioles and pubescent indumentum, as well as a campanulate or narrowly campanulate calyx. The new species differs from the latter two by its dwarf and gracile habit, small leaves only up to 1.7 cm wide, shortened scape measuring only 1–2 cm, shorter calyx 2–3 mm, and a long corolla tube that is 7–8 times as long as the calyx (Figs 1, 2, 3). The main morphological distinctions among P. intanoensis, P. calyptrata and P. xingyiensis are summarised in Table 1.</p><p>Type.</p><p>China. Guizhou: Xingyi city, Zhengtun town, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=105.0944&amp;materialsCitation.latitude=25.09" title="Search Plazi for locations around (long 105.0944/lat 25.09)">Fengjiatian village</a>. 25.0900, 105.0944, 1231 m alt., 12 November 2025 (fl.), Zhikun Wu, ZKWU 2025210 (holotype: KUN!; Isotype: KUN!) .</p><p>Description.</p><p>Perennial herb, low-growing, delicate, entire plant efarinose; aerial parts pubescent. Rhizome short, fleshy, 1–1.5 cm long, 1–3 mm thick, sparsely branched, bearing a few fibrous roots. Leaves arranged in a basal rosette at the apex of the rhizome; petiole 1.5–3.5 cm long, densely villous, slightly expanded at base, purplish-red; leaf blade suborbicular, 1.1–1.7 cm long, 1.1–1.7 cm wide, apex rounded, base cordate, margin entire, both surfaces densely villous and white glandular dots; lateral veins 2–3 pairs, inconspicuous adaxially, abaxially purplish-red and prominent, sparsely villous along veins (midrib densely villous, lateral veins sparsely villous). Scape short, 1–2 cm long, elongating to 3 cm at fruiting; inflorescence an umbel, single-tiered, 2–6 - flowered; bracts lanceolate, 2–3 mm long, externally villous; pedicel subequal to bracts in length, densely pubescent. Calyx 2–3 mm long, narrowly campanulate, villous, divided 1 / 3–1 / 2 its length; lobes narrowly triangular, apex acute. Flowers long-styled homostylous; corolla pink with a white tube, salverform; corolla tube pubescent outside, 1.5–2.3 cm long, 7–8 times as long as calyx; limb 1.1–1.6 cm in diameter; throat without an annulus, short-pubescent; corolla lobes oblong, apex deeply emarginate. Anthers positioned at the throat of corolla tube; style slightly exserted from the tube, 2–2.5 cm long. Capsule small, ca. 2 mm in diameter, dehiscing by circumscissile dehiscence. Seeds ca. 0.3 mm in diameter, surface smooth.</p><p>Distribution and ecology.</p><p>Based on our field surveys in Xingyi and nearby karst areas of southwestern Guizhou, the new species P. xingyiensis is currently known only from two populations near the type locality, Xingyi, Guizhou, China. The species grows in moist crevices on shaded cliffs in karst mountains at elevations between 1200 and 1300 meters. (Fig. 1 A – C; Fig. 3 E, F; Map 1).</p><p>Phenology.</p><p>Flowering occurs from December to January of the following year, and fruiting occurs from February to April.</p><p>Etymology.</p><p>The specific epithet of the new species is taken from the Chinese Pinyin "Xingyi", the name of the county in southwestern Guizhou, China, where the type specimen was collected (Map 1).</p><p>Vernacular name.</p><p>Chinese mandarin: xing yi bao chun (兴义报春).</p><p>Provisional conservation status.</p><p>Critically Endangered (CR B 2 ab (i, ii, iii)). This new species exhibits a highly restricted distribution range. To date, it has been found only in two adjacent populations at the type locality, Zhengtun Town, Xingyi City. Nearly a decade of field observations indicate that the species grows in shady, moist crevices of cliffs within karst mountainous areas at elevations between 1200 and 1300 metres. The total number of mature individuals across the two populations is fewer than 200. The main threats include: (1) microhabitat drought resulting from climate change; and (2) human disturbance. Applying the IUCN Red List Categories and Criteria (Version 16.0, 2024), our assessment demonstrates that P. xingyiensis meets the threshold for Critically Endangered (CR) status under criterion B 2 ab (i, ii, iii), based on: extent of occurrence (AOO) &lt;500 km 2 (B 2), severely fragmented habitat (a), with continuing decline (b) in extent of occurrence (i), area of occupancy (ii) and area, extent and / or quality of habitat (iii).</p><p>Additional specimens examined.</p><p>China • Guizhou Province, Xingyi City, Zhengtun Town, Fengjiatian, the type location, 8 April 2026 (fr.), Chao-yi Deng and Yuan-xing Lang, 20260408001 (KUN!) .</p></div>	https://treatment.plazi.org/id/BAC42E467ABD5CB6800E7F39228ABD55	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	Shi, Xiang-ting;Deng, Chao-yi;Lang, Yuan-xing;Liu, Zeng-cai;Wu, Zhi-kun	Shi, Xiang-ting, Deng, Chao-yi, Lang, Yuan-xing, Liu, Zeng-cai, Wu, Zhi-kun (2026): Primula xingyiensis (Primulaceae), a new species in Primula sect. Carolinella from Guizhou, China. PhytoKeys 276: 1-11, DOI: 10.3897/phytokeys.276.195710
