A preliminary phylogenetic study of Paraphlomis (Lamiaceae) based on molecular and morphological evidence

Ya-Ping Chen; Ang Liu; Xun-Lin Yu; Chun-Lei Xiang

doi:10.1016/j.pld.2021.03.002

A preliminary phylogenetic study of Paraphlomis (Lamiaceae) based on molecular and morphological evidence

Plant Divers. 2021 Mar 26;43(3):206-215. doi: 10.1016/j.pld.2021.03.002. eCollection 2021 Jun.

Authors

Ya-Ping Chen¹, Ang Liu², Xun-Lin Yu², Chun-Lei Xiang¹

Affiliations

¹ CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, China.
² College of Forestry, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China.

Abstract

Paraphlomis is a genus of Lamiaceae with about 30 species distributed mainly in subtropical China. In this study, we carried out the first molecular phylogenetic analyses to elucidate the relationships within the genus based on two nuclear and four plastid DNA regions. Our results, which recovered a species of Matsumurella within Paraphlomis, indicate that the genus is not monophyletic. The two sections and most of the series previously described within the genus are also shown to be polyphyletic. Combining with morphological evidence, our study indicates that nutlet morphology rather than calyx morphology is of phylogenetic value for the infrageneric classification of Paraphlomis. Moreover, P. jiangyongensis, a new species from southern China, is here described, and P . coronata, formerly treated as a variety of P . javanica, is here resurrected as a distinct species within the genus.

Keywords: Ajugoides; Infrageneric classification; Matsumurella; Nutlet; Paraphlomideae.