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Abstract Detail


Systematics Section / ASPT

Kubes, Amanda J. [1], Weston, Peter H. [2], Makinson, Bob [2], Mast, Austin [1].

Resolving relationships in Grevillea (Proteaceae), the third largest Australian plant genus.

GREVILLEA (363 spp.) is the third largest plant genus in Australia, behind Acacia and Eucalyptus. This ecologically diverse genus encompasses both 40 m tall rainforest trees and erect and prostrate shrubs of the central deserts. The closely related genera Hakea (149 spp. restricted to Australia) and Finschia (4 spp. from western Pacific Islands) differ from Grevillea in fruit characteristics. We infer a phylogeny for the group with sequences of the rpl16 intron and the matK and atpB genes from a sixth of the species in Grevillea and representatives of Hakea and Finschia. This sampling represents 33 of 36 informal groups currently recognized in Grevillea, and it represents the most complete taxonomic sampling for phylogenetic inference in Grevillea to date. In the inferred phylogeny, there is a basal polytomy made up of at least five clades. One of these clades includes all sampled members of Hakea; another includes Finschia and some of the sampled members of Grevillea. We will examine the strength of the evidence for and against a monophyletic Grevillea and discuss the evidence for a rapid radiation in the group. We will also examine the inferred evolution of fruit traits on the phylogeny.


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Mast Faculty Web Page


1 - Florida State University, Department of Biological Sciences, Tallahasse, Florida, 32306-1100, USA
2 - Royal Botanic Gardens, Mrs Macquaries Road, Sydney, New South Wales, 2000, Australia

Keywords:
Proteaceae
Australia
Grevillea
Hakea
Finschia
phylogeny
fruit evolution.

Presentation Type: Poster:Posters for Sections
Session: 48-166
Location: Auditorium/Bell Memorial Union
Date: Tuesday, August 1st, 2006
Time: 12:30 PM
Abstract ID:325


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