Sida fibulifera Lindl. Silver Sida
T.L.Mitch., T.L.Mitchell, Three Exped.Australia 2:45 (1838)

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

Brief Description
Amanda Spooner, Thursday 10 July 2003

Prostrate to procumbent perennial, herb or shrub, 0.05-0.5 m high. Fl. yellow, Mar to Oct. Basaltic soils, clay, limestone, sandy & loamy soils. Crabhole plains, floodplains.


Beard’s Provinces: Eremaean Province, Northern Province, South-West Province.

IBRA Regions: Avon Wheatbelt, Carnarvon, Central Kimberley, Central Ranges, Coolgardie, Dampierland, Gascoyne, Gibson Desert, Great Sandy Desert, Great Victoria Desert, Little Sandy Desert, Murchison, Nullarbor, Ord Victoria Plain, Pilbara, Tanami, Victoria Bonaparte, Yalgoo.

IBRA Subregions: Ashburton, Augustus, Avon Wheatbelt P1, Cape Range, Carnegie, Central, Chichester, Eastern Goldfield, Eastern Murchison, Edel, Fitzroy Trough, Fortescue, Hamersley, Hart, Lateritic Plain, Mann-Musgrave Block, McLarty, Northern band, Carlisle, Ord, Ord-Victoria Plains P1, Pentecost, Pindanland, Roebourne, Rudall, South Kimberley Interzone, Tallering, Tanami P1, Trainor, Victoria Bonaparte P1, Wooramel.

IMCRA Regions: Pilbara (nearshore), Pilbara (offshore).

Local Government Areas (LGAs): Ashburton, Broome, Carnarvon, Coolgardie, Derby-West Kimberley, East Pilbara, Exmouth, Halls Creek, Kalgoorlie-Boulder, Karratha, Laverton, Meekatharra, Menzies, Mingenew, Ngaanyatjarraku, Port Hedland, Sandstone, Wiluna, Wyndham-East Kimberley, Yalgoo.

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

Herb or shrub. Stems hairy. Leaves 10-35 mm long, 5-10 mm wide, not lobed; margins serrate; indumentum present, with stellate hairs; stipules present and persistent to older leaves or present but early deciduous (only visible on youngest leaves). Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 10-20 mm long; indumentum present, with stellate hairs. Calyx green, 2.2-4 mm long, the lobes fused half or more of their length, stellate hairs present. Corolla yellow, 3.5-6 mm long, hairs or scales present, stellate hairs present. Stamens many, united and arising from a staminal tube around the style; filaments present, 0.4-0.7 mm long; anthers 0.3-0.5 mm long. Ovary hairs and scales absent (ovary quite glabrous); style 1, 7-11 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 distinctly flat-topped; terminal awns or spines present; calyx persistent to mature fruit, 4-7 mm long, accrescent; carpels 7-8; seeds per loculus 1. Flowering time March, April, May, June, July, August, September or October. Distribution Botanical Province Northern, Eremaean or South-West, IBRA Bioregion Great Sandy Desert, Tanami, Pilbara, Carnarvon, Gascoyne, Little Sandy Desert, Gibson Desert, Central Ranges, Yalgoo, Murchison, Great Victorian Desert, Coolgardie, Nullarbor, Victoria Bonaparte, Central Kimberley, Dampierland, Ord-Victorian-Plain or Avon Wheatbelt.