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

The showy and the shy: reinstatement of two species from Ptilotus gaudichaudii (Amaranthaceae)

Timothy A. Hammer A C , Robert W. Davis B and Kevin R. Thiele A
+ Author Affiliations
- Author Affiliations

A School of Biological Sciences, Faculty of Science, The University of Western Australia, Crawley, WA 6009, Australia.

B Western Australian Herbarium, Department of Biodiversity Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, WA 6983, Australia.

C Corresponding author. Email:

Australian Systematic Botany 31(1) 1-7
Submitted: 6 May 2017  Accepted: 3 October 2017   Published: 16 February 2018


Ptilotus R.Br. (Amaranthaceae) is a widespread and species-rich Australian genus. One of the most common arid species, Ptilotus gaudichaudii (Steud.) J.M.Black (paper foxtail), currently comprises the following three subspecies: subsp. gaudichaudii, subsp. eremita (S.Moore) Lally and subsp. parviflorus (Benth.) Lally. In the present study, we re-evaluate the morphological basis for the recognition and status of infraspecies in P. gaudichaudii. Evidence from herbarium and field observations supports the reinstatement of Ptilotus gaudichaudii subsp. eremita and subsp. parviflorus to the rank of species as P. eremita (S.Moore) T.Hammer & R.W.Davis and P. modestus T.Hammer respectively.

Additional keywords: new combination, nomenclature, taxonomy.


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