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.
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Vol. 31 • No. 1