Australian Systematic Botany Australian Systematic Botany Society
Taxonomy, biogeography and evolution of plants
RESEARCH ARTICLE

A revision of the Triodia basedowii species complex and close relatives (Poaceae: Chloridoideae)

Benjamin M. Anderson A B C , Kevin R. Thiele A and Matthew D. Barrett A B
+ Author Affiliations
- Author Affiliations

A School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.

B Kings Park and Botanic Garden, Botanic Gardens and Parks Authority, Fraser Avenue, Kings Park, WA 6005, Australia.

C Corresponding author. Email: banderson2914@gmail.com

Australian Systematic Botany 30(3) 197-229 https://doi.org/10.1071/SB17011
Submitted: 20 February 2017  Accepted: 7 July 2017   Published: 20 October 2017

Abstract

Perennial grasses commonly known as ‘spinifex’ (Triodia R.Br.) are iconic Australian plants, predominantly found in the arid interior of the continent. In some areas, such as the economically important Pilbara region of Western Australia, current species taxonomy does not account for observed diversity. Previous morphological and molecular studies of Triodia basedowii E.Pritz. and related species have revealed multiple unnamed lineages requiring taxonomic recognition. Here, we describe and name eight new species of Triodia, including T. birriliburu B.M.Anderson, T. chichesterensis B.M.Anderson, T. glabra B.M.Anderson & M.D.Barrett, T. infesta B.M.Anderson & M.D.Barrett, T. mallota B.M.Anderson & M.D.Barrett, T. nana B.M.Anderson, T. scintillans B.M.Anderson & M.D.Barrett, and T. vanleeuwenii B.M.Anderson & M.D.Barrett. We also provide recircumscriptions and revised descriptions for T. basedowii, T. lanigera Domin, T. concinna N.T.Burb. and T. plurinervata N.T.Burb. A key to species and photographs are included.

Additional keywords: new species, Pilbara, spinifex, Western Australia.


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