Ptilotus polystachyus

About

Ptilotus polystachyus, commonly known as long tails, Prince of Wales feather, bottle-washers or long pussy-tails, is an erect annual or short-lived perennial herb in the Amaranthaceae family and is found in all mainland states of Australia, and in the Northern Territory. It has linear to narrowly elliptic or lance shaped leaves, and cylindrical spikes of greenish yellow or dull purplish-brown flowers.

Summary from Wikipedia