Two new species of Euryops (Asteraceae: Senecioneae) from the Sneeuberg, Eastern Cape Province, South Africa

被引：14

作者：

Nordenstam, B. ^{[2
]}

Clark, V. R. ^{[1
]}

Devos, N. ^{[1
,3
]}

Barker, N. P. ^{[1
]}

机构：

[1] Rhodes Univ, Dept Bot, ZA-6140 Grahamstown, Eastern Cape, South Africa

[2] Swedish Museum Nat Hist, Dept Phanerogam Bot, S-10405 Stockholm, Sweden

[3] Univ Liege, Inst Bot, B-4000 Liege, Belgium

来源：

SOUTH AFRICAN JOURNAL OF BOTANY | 2009年 / 75卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Asteraceae; Centre of Endemism; Euryops; Great Escarpment; New species; Sneeuberg;

D O I：

10.1016/j.sajb.2008.10.003

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

We describe two new species from the Sneeuberg, Eastern Cape Province, South Africa: Euryops proteoides and E. exsudans. Both species are locally prolific with populations centred east of the Nardousberg (Graaff-Reinet District). In a molecular phylogeny based on Internal Transcribed Spacer (ITS) sequence data, E. exsudans is sister to E. galpinii, but morphology suggests affinities to E. virgineus, E. algoensis and E. latifolius, all of which are Eastern Cape species. The affinities of E. proteoides are less certain, but it is shown to be basal to a clade comprising E. tenuissimus, E. linifolius and E. hebecarpus, although with no support. Morphologically the species is very similar to the Drakensberg species E. evansii. These two new species augment the suggestion that the greater Sneeuberg region should be recognised as a local centre of Asteraceae diversity and as a centre of diversity for Euryops in particular. (C) 2008 SAAB. Published by Elsevier B.V. All rights reserved.

引用

页码：145 / 152

页数：8

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