This taxon name is not current. The available references for this name are:
Ptilotus polystachyus var. longistachyus (W.Fitzg.) Benl is more recently known as Ptilotus giganteus (Moq.) R.W.Davis & R.Butcher
Reason See R.W. Davis & R. Butcher in Nuytsia 20:226(2010)
See also: A longer explanation of these and other terms in our Plant Names Primer.
A taxon name that is no longer current will retain its ‘Threatened’, ‘Extinct’, or ‘Extinct in the Wild’ status until a new name has been published in a Biodiversity Conservation Order.