Commersonia prostrata
(Maiden & Betche) C.F.Wilkins & WhitlockProstrate shrubs with trailing branches to c. 2 m long. Leaves ovate or cordate, 1–3.5 cm long, 0.5–2.5 cm wide, sparsely stellate-hairy above, more densely so below; margins conspicuously serrate, doubly serrate or more or less crenate for all or most their length; petioles 3–20 mm long. Inflorescence 3–12-flowered. Calyx segments 2.5–3.5 mm long, 1–1.5 mm wide, stellate-hairy on both surfaces; petals c. half as long as calyx segments, usually somewhat stellate-hairy; filaments glabrous or stellate hairy; staminodes 5, stellate-hairy. Capsule 5–9 mm diam., densely stellate hairy; setae 1.1–3.8 mm long, present throughout fruit; shaft of setae with stellate hairs; apex of setae with erect and horizontal hairs to 0.3 mm long. Flowers Oct.–Nov.
GipP. NSW. Very rare, confined in Victoria to swampy land and lake margins in the Rosedale-Stradbroke-Providence Ponds area, with an isolated occurrence on the Genoa River near Wangarabell following the 2019 fires.
Plants seem to persist for a few (up to about 10) years post-disturbance before senescing. Germination of soil-stored seeds usually follows flood, fire or earthworks.
Short, P.S. (1996). Sterculiaceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae, pp. 324–331. Inkata Press, Melbourne.
