Two new species of Polyalthiopsis (Annonaceae) based on morphological characters and phylogenetic evidence, with a supplementary description of P. chinensis from China.

ABSTRACT: Two new species of Polyalthiopsis (Annonaceae), P. nigra Y.H. Tan & Bin Yang from Guangxi and Yunnan Provinces and P. xui Y.H. Tan & Bin Yang from Yunnan Province, are described and illustrated. P. nigra is morphologically similar to P. chinensis in having narrowly elliptic-oblong, lemon to yellowish green petals, but differs by having obovoid monocarps, a higher number of leaf secondary veins, leaf blades usually widest above the middle, and a lower ratio of leaf blade length to width. P. xui is morphologically similar to P. floribunda in having axillary inflorescences, 1-3(-4) flowers, elliptic leaves, and elliptic-ovate petals, but differs in the numbers of carpels per flower and ovules per carpel. The molecular phylogenetic analysis usin

SUBMITTER: Yang B 

PROVIDER: S-EPMC10105080 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature