Molecular and morphological evidence for a new species of Stachys (Lamiaceae) from Hunan, China

Ling Xue; Jia-Hua Cai; Min Zhan; Xiao-Ping Li; Lei Wu; Ya-Ping Chen

doi:10.3897/phytokeys.236.112741

Molecular and morphological evidence for a new species of Stachys (Lamiaceae) from Hunan, China

PhytoKeys. 2023 Dec 13:236:121-134. doi: 10.3897/phytokeys.236.112741. eCollection 2023.

Authors

Ling Xue¹, Jia-Hua Cai¹, Min Zhan¹, Xiao-Ping Li², Lei Wu¹, Ya-Ping Chen³

Affiliations

¹ College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China Central South University of Forestry and Technology Changsha China.
² Yingzuijie National Nature Reserve of Hunan Province, Huaihua 563517, China Yingzuijie National Nature Reserve of Hunan Province Huaihua China.
³ 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.

Abstract

Stachysyingzuijieensis, a new species from western Hunan, China, is described and illustrated. Molecular phylogenetic analyses based on three nuclear ribosomal DNA loci (ETS, ITS and 5S-NTS) recovered S.yingzuijieensis within the Stachys clade and as a sister group of S.arrecta. The two species can be easily distinguished by the morphology of lamina, corolla and nutlet. A key to all species of Stachydeae from China is also provided.

Keywords: Eurystachys clade; Lamioideae; Stachydeae; micromorphology; taxonomy.

Ling Xue, Jia-Hua Cai, Min Zhan, Xiao-Ping Li, Lei Wu, Ya-Ping Chen.

Grants and funding

Natural Science Foundation of Hunan (2021JJ31152); the Investigation Foundation of Yingzuijie National Nature Reserve (90102/68228166); the Yunnan Fundamental Research Projects (202301AT070303).