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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not reflected in Florabase, herbarium collections, or in the census. We are hoping to be able to reinstate services around December 15; we will provide an update at that time.

The notice period started at 9:00 am on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Monday, 15 December 2025 +08:00.

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

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

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

Grazyna Paczkowska, Descriptive Catalogue, 9 May 1996
Image

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, 30 April 2019

Distribution

IBRA Regions
Carnarvon, Gascoyne, Little Sandy Desert, Murchison, Pilbara.
IBRA Subregions
Augustus, Chichester, 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.