Aconitum shennongjiaense (Ranunculaceae), a new species from Hubei, China

摘要

Aconitum shennongjiaense Q. Gao & Q. E. Yang, a new species of the Ranunculaceae from Shennongjia, northwestern Hubei, China, is described and illustrated. The new species is similar to A. kirinense Nakai in having yellow flowers and cylindrical helmets, but differs by the inflorescence axis and the pedicels densely golden villous with rough-surfaced patent hairs, the helmet higher and narrower, the spur of petals longer and obviously recurved or circinate, the ovary densely golden villous with rough-surfaced ascending hairs, and the seeds brown, obovoid, transversely lamellate, not alate. The chromosome number of the new species was counted to be 2n = 16, and the karyotype was formulated as 2n = 2 m + 6 sm + 8 st. A color plate, line drawings, distribution map, and SEM microphotographs of the pubescence of pedicels, of lateral sepals and of ovaries are given for the new species.