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Issue: Vol. 328 No. 2: 17 November 2017
Type: Article
Published: 2017-11-17
DOI: 10.11646/phytotaxa.328.2.10
Page range: 189–197
Abstract views: 27
PDF downloaded: 1

Heteropolygonatum wugongshanensis (Asparagaceae, Polygonateae), a new species from Jiangxi province of China

Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China College of Life Sciences, Hunan Normal University, Changsha, 410081, China
Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China
Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China
Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China
Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China
Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China
Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China
Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China
chromosome number molecular phylogeny morphological comparisons taxonomy Monocots

Abstract

Heteropolygonatum wugongshanensis, a new species from tribe Polygonateae in subfamily Nolinoideae (Asparagaceae) from Jiangxi Province of China, is described and illustrated. The placement of this species within Heteropolygonatum is assessed based on morphological comparisons, chromosomal evidence and molecular phylogenetic analyses. The new species is morphologically and phylogenetically related to H. roseolum, but differs from it by stems 10–20 cm tall, leaves 3–5, 12–14-nerved with prominent midrib, perigone campanulate whitish–purple, tipped greenish. The chromosome number of the H. wugongshanensis is 2n = 32 = 20m + 2sm + 10st and its karyotypes is asymmetrical with a high proportion of metacentric and submetacentric chromosomes.