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Issue: Vol. 782 No. 1: 28 Oct. 2026
Type: Article
Published: 2026-10-28
DOI: 10.11646/phytotaxa.782.1.4
Page range: 61-72
Abstract views: 26
PDF downloaded: 2

Sinosenecio primulifolius (Asteraceae), a new species from Chongqing, China

1School of Ecology; Sun Yat-sen University; Shenzhen 518107; China; 2State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Stress Biology; Sun Yat-sen University; Guangzhou 510275; China
3Chongqing Key Laboratory for the Utilization and Evaluation of Special Chinese Materia Medica Resources; Chongqing Academy of Chinese Materia Medica; Chongqing 400065; China; 4Daba Mountain Medicinal Animals and Plants Chongqing Observation and Research Station; Chengkou 405900; China
1School of Ecology; Sun Yat-sen University; Shenzhen 518107; China; 2State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Stress Biology; Sun Yat-sen University; Guangzhou 510275; China
1School of Ecology; Sun Yat-sen University; Shenzhen 518107; China; 2State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Stress Biology; Sun Yat-sen University; Guangzhou 510275; China
1School of Ecology; Sun Yat-sen University; Shenzhen 518107; China; 2State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Stress Biology; Sun Yat-sen University; Guangzhou 510275; China
Eudicots Asteraceae Sinosenecio new taxon taxonomy

Abstract

Sinosenecio primulifolius, a new species from Chongqing Municipality, southwestern China, is described and illustrated. It is characterized by the scapigerous habit, ecalyculate capitula, Primula-like, membranous, palmately 7-veined leaves with large subdeltoid mucronulate teeth along the margins and conspicuous adaxial venation, and smooth, glabrous achenes with pappus. Phylogenetic analysis based on nrITS sequences places the new species in the S. oldhamianus–Nemosenecio clade of subtribe Tephroseridinae. This affiliation is further supported by its chromosome number, 2n = 48, and polarized and radial anther endothecial cell wall thickenings. Within this clade, S. primulifolius is phylogenetically allied with S. bodinieri, S. confervifer, S. nanchuanicus, S. tongziensis, S. fanjingshanicus, S. changii, and S. lichuanensis, but is readily distinguished from these relatives by its distinctive leaf morphology.

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How to Cite

Liu, Z.-C., Liu, X., Zhao, Y.-X., Liu, Y. & Ye, J.-F. (2026) Sinosenecio primulifolius (Asteraceae), a new species from Chongqing, China. Phytotaxa 782 (1): 61–72. https://doi.org/10.11646/phytotaxa.782.1.4