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Ptilotus giganteus (Moq.) R.W.Davis & R.Butcher

Nuytsia 20:226 (2010)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status

Scientific Description

Annuals, stems single, more or less erect, glabrescent, with verticillate hairs. Leaves present, (8-)10-40(-80) mm long, 2-5 mm wide, glabrescent, with verticillate hairs; basal rosette absent; cauline leaves alternate. Spikes green or red, ovoid or cylindrical, solitary, with densely arranged flowers. Bracts (1.8-)2.2-3.8 mm long, colourless, glabrous or hairy, awned or mucronate, with a prominent midrib. Bracteoles (2.8-)3.3-4(-4.4) mm long, colourless, glabrous, awned or mucronate, with a prominent midrib. Outer tepals (7.5-)8-11(-11.8) mm long, entire. Inner tepals (7.5-)8-11(-11.8) mm long, glabrous within. Style 4.5-9(-10) mm long, sigmoid, obliquely fixed to ovary. Seeds (1.4-)1.5-1.6(-1.8) mm long. Distribution: Northern Botanical Region; IBRA regions: Central Kimberley, Dampierland, Northern Kimberley, Victoria Bonaparte.

R. Davis, 30 April 2019


IBRA Regions
Central Kimberley, Dampierland, Northern Kimberley, Ord Victoria Plain, Victoria Bonaparte.
IBRA Subregions
Berkeley, Hart, Keep, Mitchell, Mount Eliza, Pentecost, Pindanland, Purnululu.
IMCRA Regions
Bonaparte Gulf, Cambridge-Bonaparte, Kimberley.
Local Government Areas (LGAs)
Broome, Derby-West Kimberley, Halls Creek, Wyndham-East Kimberley.