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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. Due to the rapidly approaching holiday season and associated agency and facility soft closures, along with the substantial work involved in data mapping, cleaning, and verification, the migration to the new collection management software is not expected to occur before 1 March 2026, when a further update will be provided. 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 Monday, 2 March 2026 +08:00.

Philotheca rhomboidea (Paul G.Wilson) Paul G.Wilson

Reference
Nuytsia 12(2):254 (1998)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Upright, spreading shrub, 0.2-0.9(-1.3) m high. Fl. pink-white, Apr or Jul to Nov. Sand & gravel, sandy clay, laterite.

Grazyna Paczkowska, Descriptive Catalogue, 21 August 1996

Scientific Description

Shrub, spines absent; branchlets verrucose (warty), +/- cylindrical in cross-section, glabrous. Leaves alternate, simple, 2.5-4 mm long, 1.5-2 mm wide, flat, the margins flat, verrucose (warty), glabrous; stipular excrescences absent. Flowers terminal. solitary; pedicels 3-6.5 mm long; calyx present, 1-2.5 mm long, verrucose (warty), glabrous; corolla pink or white or cream, petals five, 4-6 mm long, imbricate (overlapping), free, glabrous; stamens twice as many as petals, 1.5-2 mm long, smooth, hairy; anthers 0.5-0.6 mm long, with an appendage. Flowers in April, July and November. Occurs in the Eremaean and South-West Botanical Province, in the Coolgardie, Mallee and Esperance IBRA region(s).

C. Hollister and K.R. Thiele, 14 November 2023

Distribution

IBRA Regions
Avon Wheatbelt, Coolgardie, Esperance Plains, Mallee.
IBRA Subregions
Eastern Mallee, Fitzgerald, Katanning, Merredin, Recherche, Southern Cross, Western Mallee.
Local Government Areas (LGAs)
Bruce Rock, Corrigin, Dumbleyung, Dundas, Esperance, Kent, Kondinin, Kulin, Lake Grace, Mount Marshall, Mukinbudin, Narembeen, Ravensthorpe, Wongan-Ballidu, Yilgarn.