Three new species of Cayratia-like genera (Vitaceae) from Zhejiang, East China

ZHENG-HAI CHEN; FENG CHEN; YI-FEI LU; WEN-YUAN XIE; XIAO-FENG JIN

doi:10.11646/phytotaxa.475.4.3

Issue: Vol. 475 No. 4: 15 December 2020

Type: Article

Published: 2020-12-15

DOI: 10.11646/phytotaxa.475.4.3

Page range: 253–266

Abstract views: 29

PDF downloaded: 2

**Three new species of Cayratia-like genera (Vitaceae) from Zhejiang, East China**

ZHENG-HAI CHEN⁺⁻
FENG CHEN⁺⁻
YI-FEI LU⁺⁻
WEN-YUAN XIE⁺⁻
XIAO-FENG JIN⁺⁻

Monitoring Center for Forest Resources in Zhejiang, Hangzhou, Zhejiang, 310020, People’s Republic of China

College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, People’s Republic of China

Monitoring Center for Forest Resources in Zhejiang, Hangzhou, Zhejiang, 310020, People’s Republic of China

School of Life and Environment Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, 311121, People’s Republic of China Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou, Zhejiang, 311121, People’s Republic of China

Eudicots Cayratia-like genus Causonis chloroplast sequence new species Pseudocayratia Vitaceae Zhejiang of China

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Abstract

Cayratia s. l. is not a monophyletic genus and is now divided into four genera worldwide, with three genera (Cayratia s. s., Causonis and Pseudocayratia) occurring in China. Recent morphological and molecular analyses of the Cayratia-like species from Zhejiang, East China, revealed three new species. Causonis wentsiana sp. nov. differs from C. japonica in having multicellular-pilose branchlets, leaves, peduncles and petals, petals long-corniculate at the apex. Causonis montana sp. nov. differs from C. japonica in having thick, papery leaf blades, central leaflet with lateral veins 9–12 pairs, margin 12–22-toothed on each side, and seeds acutely rugate both adaxially and abaxially. Pseudocayratia orientalisinensis sp. nov. differs from P. speciosa in having non-branched stems, papery leaf blades with central leaflet broadly obovate-elliptic, broadly elliptic or rhombic-elliptic and short-acuminate to acute apices.

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