Skip to main content

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.