Citation: DC., Prod. 1:705 (1824).

Synonymy: Not Applicable

Common name: Coast (or scrambling) twinleaf.

Description:
Shrubby perennial, sometimes almost herbaceous, slender and scrambling over stronger plants; leaflets oblong to linear, 10-15 mm long, articulate at the base or continuous with the petiole.

Petals obovate-cuneate to narrow-obovate, 10-12 mm long, yellow, usually twice as long as the sepals; stamens 8; filaments not winged; capsule drooping, acutely 4-angled, 8-12 mm long, obliquely truncate with a slight upward slope to the style.

Seeds 1 or 2 in each cell, brown, subtrigonous, granular-rugulose.

Distribution:  Coastal cliffs, between rocks, inland forms also on red and brown soils; sometimes scrambling along fences and stronger shrubs.   W.Aust.; 'Vic.; Tas. Conservation status: native Flowering time: June — Dec.

SA Distribution Map based on current data relating to specimens held in the State Herbarium of South Australia

Biology: No text

Taxonomic notes: There are at least 2 undescribed species included under Z. billardierei in S.Aust. which, in the strict sense, is restricted to coastal areas and characterised by its rather broad leaflets articulate at their base and relatively large capsules. The above description and distribution includes the undescribed species.

Author: Not yet available