<strong>Four new species of <em>Ursinia</em> (Asteraceae, Anthemideae) from South Africa, with an updated key to the genus in Namaqualand</strong>

Anthony Richard Magee; JAMES S. BOATWRIGHT; LADISLAV MUCINA

doi:10.11646/phytotaxa.177.3.1

Issue: Vol. 177 No. 3: 29 August 2014

Type: Article

Published: 2014-08-29

DOI: 10.11646/phytotaxa.177.3.1

Page range: 137–145

Abstract views: 22

PDF downloaded: 1

**Four new species of Ursinia (Asteraceae, Anthemideae) from South Africa, with an updated key to the genus in Namaqualand**

Anthony Richard Magee⁺⁻
JAMES S. BOATWRIGHT⁺⁻
LADISLAV MUCINA⁺⁻

Compton Herbarium, South African National Biodiversity Institute, Private Bag X7, Claremont 7735, Cape Town, South Africa Department of Botany and Plant Biotechnology, University of Johannesburg, P.O. Box 524, Auckland Park 2006, Johannesburg, South Africa

Department of Biodiversity & Conservation Biology, Faculty of Natural Sciences, University of the Western Cape, Private Bag x17, Bellville, 7535, Cape Town, South Africa

School of Plant Biology, University of Western Australia, 35 Stirling Hwy, Crawley WA 6009, Perth, Australia Department of Geography & Environmental Studies, Stellenbosch University, Private Bag X1, Matieland 7602, Stellenbosch, South Africa

Compositae Gariep Center of Endemism Greater Cape Floristic Region Kamiesberg Center of Endemism

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Abstract

Recent field and herbarium studies of the southern African genus Ursinia (Anthemideae, Asteraceae) in Namaqualand, South Africa, have revealed greater morphological variability than currently accommodated and a high percentage of misidentified specimens. In an attempt to remedy this we herein describe four new species (Ursinia arida, U. glandulosa, U. kamiesbergensis and U. laciniata) and provide a key to the species in the region, together with illustrations of their involucral bracts and paleae. The species can be distinguished by a combination of their life history, vestiture, presence or absence of appendages on the paleae, and shape of the involucral bracts and their scarious apices.