Sida picklesiana A.S.Markey, S.J.Dillon & R.M.Barker

Nuytsia 21:128-133, Figs. 1-3 (2011)
Conservation Code
Priority Three
Naturalised Status
Native to Western Australia
Name Status

Scientific Description

Herb or shrub. Stems glabrous. Leaves 10-45 mm long, 10-34 mm wide, not lobed; margins entire; indumentum present, with stellate hairs; stipules present but early deciduous (only visible on youngest leaves), 0.5-4 mm long. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 0.4-3.5 mm long; indumentum present, with stellate hairs. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) absent, NaN (?) mm long. Calyx green, 3-5 mm long, the lobes fused half or more of their length, stellate hairs present. Corolla yellow, 4-8 mm long, glabrous. Stamens many, united and arising from a staminal tube around the style; filaments present, 0.3-1 mm long; anthers 0.5-1 mm long, indumentum absent (anthers glabrous). Ovary hairs and scales absent (ovary quite glabrous); style 1, 2-2.8 mm long, with five style branches or lobes, mostly glabrous. Fruits indehiscent and splitting into sections (schizocarps), length-width ratio more or less as long as wide, mericarps wrinkled, hairs or scales present or hairs and scales absent, stellate hairs present, scales absent; apex rounded; prickles absent (except perhaps a terminal awn); calyx persistent to mature fruit. Flowering time April, August or November. Distribution Botanical Province Eremaean, IBRA Bioregion Gascoyne or Murchison. Conservation Code Priority Three (P3).

C. Hollister and K.R. Thiele, 15 January 2020


IBRA Regions
Gascoyne, Murchison.
IBRA Subregions
Augustus, Eastern Murchison.
Local Government Areas (LGAs)
Cue, Meekatharra, Wiluna.