Sinosenecio jiuzhaigouensis (Asteraceae, Senecioneae), a new species from Sichuan, China

Sinosenecio jiuzhaigouensis (Asteraceae, Senecioneae), a new species from Jiuzhaigou county in northwestern Sichuan province, China, is described and illustrated. This species is similar to S. hederifolius and S. cyclaminifolius in having ovate-cordate leaf blade and solitary capitula, but differs by having swollen (vs. not swollen) rhizomes and smaller capitula (2???3 vs. 4???5 cm in diameter). Two floral micromorphological characters (configuration of filament collars and of anther endothecial cell wall thickenings), achene surface feature, and chromosome number of the new species are reported.

Automated summary

Sinosenecio jiuzhaigouensis, a new species of the Asteraceae family, was discovered in Jiuzhaigou county, northwestern Sichuan province, China. It is similar to S. hederifolius and S. cyclaminifolius in leaf blade shape and solitary capitula, but differs in rhizome and capitula size. Micromorphological characters, achene surface feature, and chromosome number of the new species are reported.