PhytoKeys (Sep 2021)

Cyclorhiza puana (Apiaceae), a new species from Sichuan, China

  • Jing Zhou,
  • Jun-Mei Niu,
  • Xin-Yue Wang,
  • Pei Wang,
  • Ming-Jia Guo,
  • Zhen-Wen Liu

DOI
https://doi.org/10.3897/phytokeys.182.67009
Journal volume & issue
Vol. 182
pp. 57 – 66

Abstract

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A new species, Cyclorhiza puana J. Zhou & Z.W. Liu (Apiaceae) from Sichuan Province of China, is described and illustrated here. Morphological comparisons with congeneric species revealed that it is distinguished by its slender habit, sparse annular scars, 4-pinnatisect leaf blade with ultimate segments linear (2–4×0.5–1 mm), subequal rays, oblong fruits with slightly thickened ribs, obconic stylopodium and slightly concave seed face. A molecular analysis based on nuclear ribosomal DNA internal transcribed spacer (ITS) sequences indicated that C. puana is genetically distinct from the other two species of the genus. A distribution map, as well as an updated key, are provided for the species of Cyclorhiza.