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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s flora taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not currently being reflected in Florabase, herbarium collections, or the census. The project team is now conducting testing of the migrated data, and a further update will be provided by the end of the financial year (1 July). Please reach out to us if you have any questions or concerns.

The notice period started at 9:45 am on Friday, 12 December 2025 +08:00 and will end at 12:00 pm on Wednesday, 1 July 2026 +08:00.

Petrophile megalostegia F.Muell.

Reference
Fragm. (Mueller) 10:61 (1876)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Erect shrub, 0.3-1 m high. Fl. yellow-cream, Aug to Oct. Grey or white sand over laterite, deep sand, clay loam.

Grazyna Paczkowska, Descriptive Catalogue, 22 August 1995
Image

Scientific Description

Shrubs, 0.5-1 m high; branchlets glabrous. Leaves alternate, 25-85 mm long, 1-2 mm wide, glabrous; lamina terete or flat, clearly widest above the middle, entire, straight or curved, smooth, apex pungent, 1.5-2 mm long. Inflorescences not viscid, yellow. Perianth 28-30 mm long, hairy, the limb apex hairy all over; pistil 25-30 mm long; pollen presenter not fusiform, hairy, 5.5-6 mm long, the brush 2-3.5 mm long. Cone with persistent scales, 13-15 mm long. Flowers in August, September or October. Occurs in the South-west (SW) Botanical Province(s), in the Geraldton Sandplains (GS), Swan Coastal Plain (SWA) or Avon Wheatbelt (AW) IBRA subregion(s).

C. Hollister and K.R. Thiele, 19 January 2024

Distribution

IBRA Regions
Avon Wheatbelt, Geraldton Sandplains, Swan Coastal Plain.
IBRA Subregions
Dandaragan Plateau, Geraldton Hills, Lesueur Sandplain, Merredin.
Local Government Areas (LGAs)
Carnamah, Chapman Valley, Coorow, Dandaragan, Greater Geraldton, Irwin, Mingenew, Perenjori, Three Springs.