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Issue: Vol. 655 No. 1: 21 Jun. 2024
Type: Article
Published: 2024-06-21
DOI: 10.11646/phytotaxa.655.1.2
Page range: 21-36
Abstract views: 110
PDF downloaded: 8

Rediscovery of Youngia longipes reveals a new species of Youngia (Asteraceae) in China

State Key Laboratory of Plant Diversity and Specialty Crops, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
College of Biology and Environmental Sciences, Jishou University, Jishou 416000, Hunan, China
State Key Laboratory of Plant Diversity and Specialty Crops, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China. College of Life Science, Henan Agricultural University, Zhengzhou 450002, Henan, China.
College of Biology and Environmental Sciences, Jishou University, Jishou 416000, Hunan, China.
State Key Laboratory of Plant Diversity and Specialty Crops, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
Shengnongjia National Park Administration, Shennongjia 442421, Hubei, China
Central Herbarium of Uzbekistan, Institute of Botany, Academy Sciences of Uzbekistan, Tashkent 100025, Uzbekistan
State Key Laboratory of Plant Diversity and Specialty Crops, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
State Key Laboratory of Plant Diversity and Specialty Crops, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
Crepidinae new species Youngia morphology molecular phylogeny Hunan Eudicots

Abstract

Youngia wulingensis, a new species of Asteraceae from Wuling Mountain, central China, is described and illustrated. This new species had been identified as Y. longipes for a long period of time. However, we rediscovered Y. longipes in its type locality, re-examined the type specimen of Y. longipes, and found out many differences between Y. longipes and Y. wulingensis, which can be easily distinguished by the shape of leaves and especially the cylindrical involucre with a keel-like central rib. The phylogenetic analyses based on the internal transcribed spacers (ITS) and one chloroplast marker (rps16) indicated that three accessions of Y. wulingensis were grouped together (BP = 1 and LP = 0.98) and appeared sister to Y. zhengyiana with strong support (PP = 1, LP = 0.98). Finally, we characterised the new species by morphological comparisons and molecular analyses.

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