identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
384BC4C0B6CD58649D77CCA1CF6D1A08.text	384BC4C0B6CD58649D77CCA1CF6D1A08.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lysimachia yulongensis Z. K. Wu & Ming Y. Sheng 2026	<div><p>Lysimachia yulongensis Z. K. Wu &amp; Ming Y. Sheng sp. nov.</p><p>Figs 1, 2, 3</p><p>Diagnosis.</p><p>The new species exhibits a floral morphology similar to that of Lysimachia prolifera and L. pumila, characterised by dwarf plants with creeping or nearly erect habits, few flowers clustered at the stem apex or solitary in leaf axils, lanceolate sepals, elliptical and dorsifixed anthers. However, it can be distinguished from these two species by several morphological features: a strongly stoloniferous growth habit, with creeping stems serving a vegetative function as stolon and terminating in a leaf rosette during fruiting; narrowly elliptic to oblanceolate or spatulate leaves; and flowers solitary in leaf axils along obliquely ascending stems.</p><p>Type.</p><p>China • Yunnan: Lijiang, Yulong County, Baisha Town, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=102.21667&amp;materialsCitation.latitude=26.95" title="Search Plazi for locations around (long 102.21667/lat 26.95)">Yulong Snow Mountain</a>; 26°57'N, 102°13'E, 3100 m alt., 1 August 2024 (fr., fl.) Zhikun Wu ZKWU 2024146 (holotype: KUN!; isotype: KUN!) .</p><p>Description.</p><p>A robust perennial herb, dwarf, efarinose, sparsely glandular, entirely glabrous. Rhizomes short, with numerous fibrous roots. Stems creeping, 10–20 cm long, usually much-branched from base, elongated, producing adventitious roots from apical nodes during fruiting for propagation. Leaves alternate, subsucculent, narrowly elliptic to oblanceolate or spatulate, 0.6–2.1 cm long (including petiole), 0.3–0.6 cm wide, apex obtuse to rounded, base attenuate into a winged petiole; petiole 0.2–0.7 cm long, ca. 1 / 3 as long as leaf blade; adaxial surface puberulent, abaxial surface sparsely covered with dark purple or black glands. Flowers solitary in leaf axils, obliquely ascending at anthesis, 5–20 flowers per plant; pedicel 0.5–2.5 cm long, longer than leaves, gradually shorter towards stem apex. Calyx lobes narrowly lanceolate, ca. 3 mm long, margins hyaline, abaxially sparsely dotted with dark purple or black glands. Corolla white to pale pink, campanulate, 5–11 mm long, divided to middle; tube ca. 2–4 mm long; lobes oblong, 3–7 mm long, 0.5–1 mm wide, eglandular, apex obtuse; stamens included, slightly shorter than corolla lobes; filaments adnate to lower part of corolla lobes, free portion ca. 2 mm long; anthers elliptic, dorsifixed, ca. 1–2 mm long; ovary ovoid, glabrous; style ca. 6 mm long. Capsule subglobose, ca. 2 mm in diameter.</p><p>Distribution and ecology.</p><p>Based on specimens deposited in KUN and PE, as well as our field surveys in Yunnan and adjacent regions, Lysimachia yulongensis is currently known only from the vicinity of Yulong Snow Mountain in Lijiang, Yunnan, China. To date, three populations have been recorded in this area. The species occurs in wet meadows along the margins of alpine lakes and streams (Fig. 1, Map 1).</p><p>Phenology.</p><p>The species was observed flowering from June to August and fruiting from August to September.</p><p>Etymology.</p><p>The specific epithet of the new species is taken from the Chinese Pinyin ” Yulong ”, the name of the mountain in north-western Yunnan, China, where the type specimen was collected (Map 1).</p><p>Vernacular name.</p><p>Chinese Mandarin: “ yu long zhen zhu cai ” (玉龙珍珠菜).</p><p>Provisional conservation status.</p><p>Endangered (EN B 1 ab (iii)). Repeated field surveys within the range of Yulong Snow Mountain and adjacent areas have revealed only three populations of L. yulongensis, totalling approximately 2000 mature individuals. Specimens deposited in herbaria (KUN, PE, E, NY, IBSC) further indicate that other collectors have recorded no additional populations during historical or recent fieldwork. All three known populations occur in wet meadows along alpine lakes and streams. These habitats are subject to significant anthropogenic pressure from livestock grazing and tourism development. Given these threats, the species requires urgent conservation attention and further field surveys are recommended to monitor its status.</p><p>According to our estimates, the extent of occurrence (EOO) of this species is less than 1000 km 2. Over the past nine years, field observations have indicated a continuous decline in the quality of its habitat, primarily due to tourism activities and grazing pressure. This ongoing degradation underscores the urgent need for conservation measures to safeguard both the species and its habitat. Based on current field data and the IUCN Red List Categories and Criteria (IUCN Standards and Petitions Committee 2024), we propose that this species be classified as Endangered (EN B 1 ab (iii)).</p><p>Additional specimens examined.</p><p>China • Yunnan Province, Lijiang, Yulong Mountain, Wenhai, the type location, 8 July 1962, Zhang Aoluo and Yu Shaowen, 100524 (KUN!) , 20 June 2016 (fl.), ZhiKun WU ZKWu 2016620 (KUN!), 29 August 2022 (fr.) ZhiKun WU, ZKWu 2022829 (KUN!); China • Yunnan Province, Lijiang, Yulong Naxi Autonomous County, Lashi Town, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=100.132&amp;materialsCitation.latitude=26.844759" title="Search Plazi for locations around (long 100.132/lat 26.844759)">Lashihai Wetland Park</a> [26.844759°N, 100.132004°E], 16 June 2021, Liu Ende, Zou Jiao, Wang Cunhua, Chen Zhijian, Shangguan Fazhi, BIO 10474 (KUN!) ; China • Yunnan Province, Lijiang, West Slope of Jade Dragon Snow Mountain [27 ° 20 '], July 1918, George Forrest 16244 (KUN!) .</p></div>	https://treatment.plazi.org/id/384BC4C0B6CD58649D77CCA1CF6D1A08	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	Sheng, Ming-yun;Yang, Wu-hai;Shuai, Tian;Chen, Yu-fan;Yin, Li-juan;Wu, Zhi-kun	Sheng, Ming-yun, Yang, Wu-hai, Shuai, Tian, Chen, Yu-fan, Yin, Li-juan, Wu, Zhi-kun (2026): Lysimachia yulongensis (Primulaceae), a new species in Lysimachia sect. Pumilae from Yunnan, China. PhytoKeys 270: 155-164, DOI: 10.3897/phytokeys.270.177773
