Skip to main content

Service Notice

The Western Australian Herbarium’s collections management system and census were set to read-only mode on 1 October 2025. Taxonomic updates published since this time are not being reflected in Florabase, herbarium collections, or Western Australia’s taxonomic names census (Nomos). Conservation listings displayed on Florabase may also be out of date. Please refer to DBCA’s Threatened species and communities webpage for the most recent Threatened and Priority Flora List, noting that recent taxonomic updates are similarly not included. Our database migration is moving to a staging phase. We thank you for your patience as we ensure the integrity of our biodiversity data, develop new workflows, and train staff to use the new systems. Please reach out to us if you have any questions or concerns.

The notice period started at 12:00 pm on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Friday, 1 January 2027 +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.