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Issue: Vol. 770 No. 3: 21 Aug. 2026
Type: Article
Published: 2026-08-21
DOI: 10.11646/phytotaxa.770.3.2
Page range: 174-186
Abstract views: 70
PDF downloaded: 1

Two new species of Cirsium (Asteraceae, Cardueae) from Xizang, China: C. yadongense and C. jilongense

Plant Science Research Center; South China Botanical Garden; Chinese Academy of Sciences; Guangzhou; Guangdong 510650; China; University of Chinese Academy of Sciences; Beijing100049; China
Plant Science Research Center; South China Botanical Garden; Chinese Academy of Sciences; Guangzhou; Guangdong 510650; China; Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China; Guangzhou 510650; China
Eudicots Compositae Hyb-Seq morphology taxonomy

Abstract

Cirsium yadongense and C. jilongense (Asteraceae), two new species from southern Xizang, China, are described and illustrated. Cirsium yadongense is morphologically similar to C. subulariforme in having a campanulate involucre and pinnatilobate cauline leaves, but differs in having leaves concolorous (vs. discolorous), green and glabrous or sparsely tomentose abaxially (vs. abaxially grayish white and densely tomentose), cordate near the involucre (vs. lanceolate or linear), and a purplish corolla (vs. white). Cirsium jilongense is morphologically similar to C. nishiokae in having pinnatisect leaves and erect capitula, but differs in having leaves concolorous (vs. discolorous), green and glabrous or sparsely tomentose abaxially (vs. abaxially grayish white and densely tomentose), and acuminate phyllaries (vs. phyllaries with margins above the base expanded into yellowish, scarious, lacerate wings). The recognition of these two species as distinct, previously undescribed taxa of Cirsium is further supported by phylogenetic analyses based on Hyb-Seq data.

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How to Cite

Jin, Z.-C. & Chen, Y.-S. (2026) Two new species of Cirsium (Asteraceae, Cardueae) from Xizang, China: C. yadongense and C. jilongense. Phytotaxa 770 (3): 174–186. https://doi.org/10.11646/phytotaxa.770.3.2