Brisbane Rainforest Action & Information Network

Zieria collina (RUTACEAE); Hill zieria

Photo: Robert Whyte
Spreading shrub to 3m found on the margins of subtropical rainforest and wet sclerophyll forest.

Restricted to the Mt Tamborine-Canungra area of Queensland and listed as vulnerable.

Young branchlets not warty, but velvety.

Leaves compound (trifoliolate) and opposite; leaflets 3, oblong to oblanceolate, to 3cm by 5mm, mostly with flat margins, velvety and densely hairy below (with star hairs). Petiole 1-8mm in length.

Flowers small, white, with 4 petals to about 3mm in length, borne in short panicles in leaf axils, or rarely solitary. Appear mainly Aug-Oct, but also at other times of the year.

Fruit a small, dry greenish capsule with 1-4 segments, almost free, each containing a black seed. Ripe mostly around Nov (ripening in about 6 weeks), or throughout the year.

Favoured by disturbance, forming thickets in light rainforest; often a dominant shrub in regrowth. A spindly shrub in heavy clay soils on the margin between tall open forest and rainforest with emergent hoop pine. Seedlings tend to be close to, but not directly beneath, parent plants.