Cyclorhizapuana (Apiaceae), a new species from Sichuan, China

PhytoKeys. 2021 Sep 20:182:57-66. doi: 10.3897/phytokeys.182.67009. eCollection 2021.

Abstract

A new species, Cyclorhizapuana 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.

Keywords: Apiaceae; Cyclorhiza; new species; nrITS; phylogeny.

Grants and funding

This work was supported by the National Natural Science Foundation of China (no. 31960048 and 31460052), the “Ten Thousand Talents Program of Yunnan” (YNWR-QNBJ-2019-208) and the Hundred-Talent Program of Kunming Medical University (no. 60118260127).