Sida laevis Domin
Biblioth.Bot. 89:387 (1928)

Conservation Code: Not threatened
Naturalised Status: Native to Western Australia
Name Status: Current

Brief Description
Grazyna Paczkowska, Tuesday 24 September 1996

Shrub, to 0.6 m high. Fl. yellow, Jun to Jul. Clay.


Beard’s Provinces: Eremaean Province, Northern Province.

IBRA Regions: Dampierland, Ord Victoria Plain, Pilbara.

IBRA Subregions: Fitzroy Trough, Fortescue, Hamersley, Ord, Ord-Victoria Plains P1, South Kimberley Interzone.

Local Government Areas (LGAs): Ashburton, Derby-West Kimberley, Halls Creek, Wyndham-East Kimberley.

Scientific Description
Chris Hollister and Kevin Thiele, Thursday 18 May 2017

Herb or shrub. Stems hairy. Leaves 12-35 mm long, 1-10 mm wide, not lobed; margins entire; indumentum present, with stellate hairs; stipules present and persistent to older leaves, 5-7 mm long. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 5-30 mm long; indumentum present, with stellate hairs. Calyx green, 3-4.2 mm long, the lobes fused less than half their length, stellate hairs present. Corolla yellow, 6-10 mm long, glabrous. Stamens many, united and arising from a staminal tube around the style; filaments present, 1.3-2 mm long; anthers 1-1.2 mm long. Ovary hairs and scales absent (ovary quite glabrous); style 1, 4-6 mm long, with four or numerous 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, stellate hairs present; apex rounded; calyx persistent to mature fruit, 4.5-5 mm long, accrescent. Flowering time June or July. Distribution Botanical Province Northern or Eremaean, IBRA Bioregion Pilbara, Dampierland or Ord-Victorian-Plain.