Roepera similis (H.Eichler) Beier & Thulin

White Twinleaf

Pl. Syst. Evol. 240: 32 (2003)

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: rare (r)

Erect or ascending much-branched annual herb 10–30 cm high; stems spreading and ascending. Leaves 10–40 mm long, green; leaflets articulate at base, linear to narrow-oblong, 5–20 mm long, 1.5–4 mm wide, fleshy, apex rounded; common petiole narrow. Sepals 4, ovate, 1.5–3 mm long, deflexed or spreading in fruit; petals 4, cuneate, 1–1.7 mm long, apex often 3-lobed or sometimes blunt with a wavy margin, white; stamens 8, filaments filiform, broadening towards base. Fruiting pedicels 1–4 mm long; fruit a 4-angled loculicidal capsule, turbinate, 5–7 mm long, drooping, truncate at apex with a short point; seeds usually 1 or 2 per cell. Flowers mostly May–Dec.

LoM, MuM, MSB, RobP. All mainland states. In Victoria, confined mainly to the far north-west where found in mallee scrub and riverine woodland on sand or heavier clay soils, but with an outlying occurrence near Kerang.

See note after R. ammophila.

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 (as Zygophyllum simile H.Eichler).
Updated by: Neville Walsh, 2019-06-06
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Roepera similis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Roepera similis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Murray Scroll Belt present native
Robinvale Plains present native