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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.

Boronia tetragona Paul G.Wilson

Reference
Nuytsia 12(1):140-141 (1998)
Conservation Code
Priority Three
Naturalised Status
Native to Western Australia
Name Status
Current

Perennial, herb, 0.3-0.7 m high, leaves sessile, entire, with papillate margins, branches quadrangular, sepals ciliate. Fl. pink & red, Oct to Dec. Black/white sand, laterite, brown sandy loam. Winter-wet flats, swamps, open woodland.

Helen Coleman, Descriptive Catalogue, 7 April 1998

Scientific Description

Shrub, spines absent; branchlets smooth, without distinct raised glands, winged or strongly angled in cross-section, glabrous. Leaves opposite, simple, 8-30 mm long, 2-10 mm wide, flat, the margins flat, smooth, without distinct raised glands, glabrous; stipular excrescences absent. Flowers in terminal umbels; pedicels 8-12 mm long; calyx present, 3-3.5 mm long, smooth, without distinct raised glands, glabrous except for a ciliate marginal fringe, the hairs stellate (star-shaped); corolla red or pink, petals four, 5.5-7.5 mm long, imbricate (overlapping), free, glabrous; stamens twice as many as petals; anthers 1-1.2 mm long, with an appendage. Flowers in October, November and December. Occurs in the South-West Botanical Province, in the Jarrah Forest and Swan Coastal Plain IBRA region(s). Conservation Code: Priority Three (P3).

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

Distribution

IBRA Regions
Jarrah Forest, Swan Coastal Plain.
IBRA Subregions
Perth, Southern Jarrah Forest.
Local Government Areas (LGAs)
Augusta Margaret River, Busselton, Capel.