The status of infraspecific taxa and new subspecies in Ptilotus stirlingii (Amaranthaceae)
DAVIS, R.W. AND BUTCHER, R.
This paper evaluated current infraspecific taxa within Ptilotus stirlingii (Lindl.) F.Muell. using morphometric analysis. We conclude that var. pumilus Benl should no longer be recognised as a distinct variety from var. stirlingii and that var. laxus (Benth.) Benl and var. minutus Benl should be merged into a single taxon. The new name P. stirlingii subsp. australis R.W.Davis & R.Butcher is erected for this taxon and var. stirlingii is elevated in rank. With these changes, P. stirlingii now comprises two subspecies rather than four varieties. Revised descriptions and a key are presented for the new subspecies.
