Zygophyllum billardierei DC.

Coast Twinleaf

Prodr. 1: 705 (1824) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: rare (r)

Scrambling or ascending perennial herb or subshrub 30–60 cm high; stems slender, to c. 2 m long, sometimes climbing over taller plants. Leaves 15–45 mm long, green; leaflets articulate at base or continuous with petiole, oblong-elliptic to elliptic, 10–30 mm long, (3–)4–12 mm wide, fleshy, apex rounded or truncate; common petiole narrow. Sepals 4, ovate-lanceolate, 5–9 mm long, deflexed or spreading in fruit; petals 4, obovate-cuneate, 8–15 mm long, apex rounded to emarginate, bright yellow; stamens 8, filaments subulate, lacking wings. Fruiting pedicels 5–15 mm long; fruit a 4-angled loculicidal capsule, obconical, 10–12 mm long, drooping, abruptly truncate at apex with a short, blunt appendage at the upper corner of each angle and a persistent style; seeds 1 or 2 per cell. Flowers mostly Jun.–Dec.

Brid, CVU, GipP, Glep, OtP, VAlp, VVP, WaP. Also WA, SA, Tas. Found in coastal areas west from Wilsons Promontory where found on dunes and limestone cliffs in scrubby vegetation. .

Source: Jeanes, J.A. (1999). Zygophyllaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
genus Zygophyllum
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Zygophyllum billardierei in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Zygophyllum billardierei in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Glenelg Plain present native
Bridgewater present native
Victorian Volcanic Plain present native
Gippsland Plain present native
Otway Plain present native
Warrnambool Plain present native
Central Victorian Uplands present native
Victorian Alps present native

State distribution

Distribution map
Western Australia
South Australia
New South Wales