Ying LIU and Qin-Er YANG. 2010 Botanical Studies 51(2): 269-275

ABSTRACT: Sinosenecio yilingii Y. Liu & Q. E. Yang, a new species from Sichuan, China, is described and illustrated. The new species is similar to S. homogyniphyllus (Cumm.) B. Nord., but differs in the taller stature, the leaves radical and cauline, often reniform, occasionally broadly ovate, glabrous or very sparsely pubescent above, the petioles proximally and the peduncle distally densely sericeous, the capitula solitary and terminal, and the phyllaries 11-13. Its somatic karyotype is formulated as 2n = 56m + 4sm, giving a chromosome number of 2n = 60. Photographs of both S. yilingii and S. homogyniphyllus, line drawings, distribution map, and light microscope (LM) microphotographs of floral characters of S. yilingii are provided.