Sinosenecio hupingshanensis (Asteraceae), a new species from Hunan and Hubei, China.

Sinosenecio hupingshanensis Y. Liu & Q. E. Yang, a new species of the Asteraceae from Hunan and Hubei, China, is described and illustrated. Its karyotype is formulated as 2n = 44m + 2sm + 2st, giving a chromosome number of 2n = 48. This new species is similar to S. baojingensis Y. Liu & Q. E. Yang and S. denticulatus J. Q. Liu in its posture, floral morphology and pappose achenes. It differs from S. baojingensis in leaf shape and stature. From S. denticulatus it differs in the leaf-lamina being very indistinctly repand, pubescent above, the petioles expanded but never auriculate at the base, and in its smaller stature. Line drawings, distribution map, light microscope (LM) microphotographs of floral characters of S. hupingshanensis, color photographs of both S. hupingshanensis and S. denticulatus, and a key to aid in the identification of S. hupingshanensis and its possible relatives are provided. [ABSTRACT FROM AUTHOR]