Ptilotus giganteus (Moq.) R.W.Davis & R.Butcher
Nuytsia 20:226 (2010)

Conservation Code: Not threatened
Naturalised Status: Native to Western Australia
Name Status: Current


Beard’s Provinces: Northern Province.

IBRA Regions: Central Kimberley, Dampierland, Northern Kimberley, Ord Victoria Plain, Victoria Bonaparte.

IBRA Subregions: Berkeley, Hart, Mitchell, Mount Eliza, Ord, Ord-Victoria Plains P1, Pentecost, Pindanland, Victoria Bonaparte P1.

IMCRA Regions: Bonaparte Gulf, Cambridge-Bonaparte, Kimberley.

Local Government Areas (LGAs): Broome, Derby-West Kimberley, Halls Creek, Wyndham-East Kimberley.

Scientific Description
Robert Davis, Thursday 22 December 2016

Erect, annual herbs, to 1 m high. Stems ribbed, sparsely hairy with nodose hairs. Cauline leaves alternate, oblanceolate, 10−80 mm long, 3−12 mm wide, sparsely hairy with crisped, nodose hairs, margins undulate. Inflorescences terminal, green, sometimes fading red, cylindrical, 20−180 mm long, 20−27 mm wide; bracts narrowly ovate, straw coloured becoming translucent toward margins, 2−3.8 mm long, sparsely hairy with crisped, nodose hairs; bracteoles broadly ovate, translucent, 2.8−4.4 mm long, glabrous. Flowers pedicellate; pedicels slender, 0.7−1.6 mm long with reduced disc at apex; outer tepals green, linear, concave, 7.5−11.8 mm long, densely hairy at base becoming sparse towards apex with long, silky, nodose hairs to 4 mm long, apex entire, rounded, slightly hooded, glabrous; inner tepals 7.5−11.8 mm long; staminal cup sub-symmetrical, to 0.5 mm long, glabrous; fertile stamens 4; staminodes 1; style sigmoid, centrally fixed to ovary, 4.5−10.5 mm long, densely hairy towards apex; ovary obovoid, densely hairy. Seed slightly dull, brown, to 1.8 mm long.