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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.

Boronia tetrandra Labill.
Yellow Boronia

Reference
Nov.Holl.Pl. 1:98 (1805)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Spreading or erect shrub, 0.1-1(-1.5) m high. Fl. green-cream-yellow/red-brown, May or Jul to Oct. Sand, clay. Granite outcrops, coastal sand dunes & limestone cliffs.

Grazyna Paczkowska, Descriptive Catalogue, 19 August 1996

Scientific Description

Shrub, spines absent; branchlets smooth, without distinct raised glands, +/- cylindrical in cross-section, covered in hairs or scales, the hairs stellate (star-shaped). Leaves opposite, compound, 11-20 mm long, with 5(-11) leaflets, each 5-10 mm long, 1.5-2 mm wide, flat, the margins flat, smooth, without distinct raised glands, glabrous; stipular excrescences absent. Flowers axillary, solitary; pedicels 2-2.5 mm long; calyx present, 2-3 mm long, smooth, without distinct raised glands, glabrous or covered in hairs or scales, the hairs simple; corolla red, yellow, white or cream, green or brown, petals four, 5-6 mm long, imbricate (overlapping), free, glabrous; stamens twice as many as petals, 1-1.5 mm long, smooth, glabrous; anthers 1-1.2 mm long, with an appendage, glabrous. Flowers in May, July, August, September and October. Occurs in the South-West Botanical Province, in the Jarrah Forest and Esperance IBRA region(s).

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

Distribution

IBRA Regions
Esperance Plains, Jarrah Forest.
IBRA Subregions
Fitzgerald, Recherche, Southern Jarrah Forest.
IMCRA Regions
WA South Coast.
Local Government Areas (LGAs)
Albany, Esperance, Jerramungup, Ravensthorpe.