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Issue: Vol. 425 No. 4: 10 December 2019
Type: Article
Published: 2019-12-10
DOI: 10.11646/phytotaxa.425.4.5
Page range: 244–252
Abstract views: 24
PDF downloaded: 1

Youngia jiulongshanensis (Asteraceae: Liguliflorae), a new species from Zhejiang, East China

Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, College of Life and Environment Sciences, Hangzhou Normal University, 2318 Yuhangtang Rd., Hangzhou 311121, China
Zhejiang Museum of Natural History, 6 Xihu Culture Square, Hangzhou, 310014, China
Administration of Zhejiang Jiulongshan National Nature Reserve, 18 Pingchang Rd., Suichang, 323300, China
Administration of Zhejiang Jiulongshan National Nature Reserve, 18 Pingchang Rd., Suichang, 323300, China
Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, College of Life and Environment Sciences, Hangzhou Normal University, 2318 Yuhangtang Rd., Hangzhou 311121, China
Eudicots Asteraceae China new species Zhejiang

Abstract

A new species of Asteraceae, Youngia jiulongshanensis, is described and illustrated from Mount Jiulong, south-western Zhejiang Province of East China. It most closely resembles Youngia heterophylla, but differs in having smaller oblong basal leaves (vs. basal leaves oblanceolate), lateral lobes of leaves 1–2 pairs (vs. 1‒8 pairs), 5‒7(8) florets in each capitula (vs. 11‒25 florets in each capitula), involucre 5‒6 mm long (vs. 6‒7.5 mm long), inner phyllaries 5 (vs. 8). Observations on pollen grains of Youngia jiulongshanensis and Y. heterophylla detect the pollen grains of the new species are significantly larger than those of Y. heterophylla. Sequences of ITS (Internal Transcribed Spacer) and cp DNA demonstrate Youngia heterophylla as the closest extant relative of the new species.