Paraphlomishsiwenii (Lamiaceae), a new species from the limestone area of Guangxi, China

Ya-Ping Chen; Jin-Fei Xiao; Chun-Lei Xiang; Xiong Li

doi:10.3897/phytokeys.212.91174

Paraphlomishsiwenii (Lamiaceae), a new species from the limestone area of Guangxi, China

PhytoKeys. 2022 Nov 3:212:85-96. doi: 10.3897/phytokeys.212.91174. eCollection 2022.

Authors

Ya-Ping Chen¹, Jin-Fei Xiao¹, Chun-Lei Xiang¹, Xiong Li²

Affiliations

¹ CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China Kunming Institute of Botany, Chinese Academy of Sciences Kunming China.
² Guangxi Forestry Inventory and Planning Institute, Nanning, 530011, China Guangxi Forestry Inventory and Planning Institute Nanning China.

Abstract

The indumentum of nutlets is shown to be of phylogenetic importance in previous molecular phylogenetic studies of Paraphlomis, a genus of Lamiaceae with approximately 30 species distributed mainly in southern China and Southeast Asia. Nearly half the species of Paraphlomis are known from limestone areas. In this study, we described and illustrated a new species, P.hsiwenii, from the karst mountain forests in Guangxi Zhuang Autonomous Region, China. Our molecular phylogenetic analyses revealed that P.hsiwenii is recovered in a clade consisting of species with hairy nutlets. The new species is morphologically most similar to P.pagantha from the same clade, but they differ in the morphology of lamina bases, length of pedicels and calyces, as well as the morphology of upper corolla lips.

Keywords: Ajugoides; Matsumurella; Paraphlomideae; karst; nutlet.

Ya-Ping Chen, Jin-Fei Xiao, Chun-Lei Xiang, Xiong Li.