Ptilotus rotundifolius (F.Muell.) F.Muell.
Royal Mulla Mulla

Fragm. 6:230 (1868)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status

Shrub, 0.4-2 m high. Fl. pink-purple, Jul to Oct. Stony soils. Rocky hills & rises.

Grazyna Paczkowska, Descriptive Catalogue, 9 May 1996

Scientific Description

Shrubs, stems single, more or less erect, persistently hairy, with nodose hairs. Leaves present, 12-75 mm long, 9-70 mm wide, persistently hairy, with nodose hairs; basal rosette absent; cauline leaves alternate. Spikes pink, ovoid or cylindrical, solitary, with densely arranged flowers. Bracts 3-6.5 mm long, coloured, hairy, awned or mucronate, with an obscure midrib. Bracteoles 7-8.5 mm long, colourless, hairy, awned or mucronate, with a prominent midrib. Outer tepals 15.3-19 mm long, not entire. Inner tepals 15-18.5 mm long, with a basal tuft of hairs on inner face. Style 7-9 mm long, straight, centrally fixed to ovary. Distribution: Eremaean Botanical Region; IBRA regions: Carnarvon, Gascoyne, Murchison, Pilbara.

R. Davis, 21 March 2019


IBRA Regions
Carnarvon, Gascoyne, Little Sandy Desert, Murchison, Pilbara.
IBRA Subregions
Augustus, Eastern Murchison, Fortescue, Hamersley, Trainor, Western Murchison, Wooramel.
Local Government Areas (LGAs)
Ashburton, Carnarvon, Cue, East Pilbara, Leonora, Meekatharra, Mount Magnet, Murchison, Upper Gascoyne, Wiluna.