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Issue: Vol. 638 No. 2: 29 Feb. 2024
Type: Article
Published: 2024-02-29
DOI: 10.11646/phytotaxa.638.2.2
Page range: 131-142
Abstract views: 145
PDF downloaded: 8

Phlomoides cuonaensis (Lamiaceae), a new species from Xizang (China), and lectotypification of the name Notochaete hamosa

Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010000, Inner Mongolia, China. CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China. University of Chinese Academy of Sciences, Beijing 100049, China.
Honghe Institute of Tropical Agriculture Science, Hekou 661300, Yunnan, China.
Department of Higher Plants, Biological Faculty, Lomonosov Moscow State University, Moscow 119234, Russia.
CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
Lamioideae Phlomideae Qinghai-Tibetan Plateau taxonomy Eudicots

Abstract

Phlomoides is the second largest genus within Lamiaceae subfamily Lamioideae, and China is one of three diversity centers of the genus. In this study, we described and illustrated a new species, Phlomoides cuonaensis, from Cuona City, Xizang Autonomous Region, China. Molecular phylogenetic analyses revealed that P. cuonaensis and two morphologically similar species, P. hamosa and P. longiaristata, form a distinct clade within Phlomoides. Synapomorphies of this small clade are hooked floral bracts and calyx spines. The new species differs from the other two in trichome density and size on the calyx, floral bract, and nutlet, and in the length of the calyx and bract. Micro-morphological features of nutlets of these three species were examined using scanning electron microscopy. In addition, a lectotype for the name Notochaete hamosa (≡ Phlomoides hamosa) was designated.

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