Gossypium australe F.Muell.
Native Cotton

Fragm. 1:46 (1858)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status

Shrub, 0.5-3 m high. Fl. blue-purple/pink, Apr to Oct. Red, often sandy soils.

Grazyna Paczkowska, Descriptive Catalogue, 19 September 1996

Scientific Description

Herb or shrub. Stems hairy. Leaves 50-120 mm long, 25-45 mm wide, not lobed; margins entire; hairs and scales absent (leaves quite glabrous); 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, 10-25 mm long; indumentum present, with stellate hairs. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 9-12 mm long, the lobes free, glabrous. Calyx green, 17-27 mm long, the lobes fused less than half their length, stellate hairs present. Corolla pink, blue or purple, 25-50 mm long, glabrous. Stamens many, united and arising from a staminal tube around the style; filaments present, 0.5-0.7 mm long; anthers 1.5-2 mm long. Ovary hairs and scales absent (ovary quite glabrous); style 1, with a lobed or capitate stigma, 15 mm long, with one style branches or lobes, mostly glabrous. Fruits dehiscent (capsules and follicles), length-width ratio more or less as long as wide, hairs or scales present, stellate hairs present; apex rounded; calyx persistent to mature fruit, not accrescent; seeds per loculus 2-4. Flowering time April, May, June, July, August, September or October. Distribution Botanical Province Northern or Eremaean, IBRA Bioregion Great Sandy Desert, Tanami, Carnarvon, Little Sandy Desert, Gibson Desert, North Kimberley, Victoria Bonaparte, Central Kimberley, Dampierland or Ord-Victorian-Plain.

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


IBRA Regions
Carnarvon, Central Kimberley, Central Ranges, Dampierland, Gibson Desert, Great Sandy Desert, Little Sandy Desert, Northern Kimberley, Ord Victoria Plain, Pilbara, Tanami, Victoria Bonaparte.
IBRA Subregions
Cape Range, Chichester, Fitzroy Trough, Fortescue, Hamersley, Hart, Keep, Lateritic Plain, Mackay, McLarty, Mitchell, Mount Eliza, Pentecost, Pindanland, Purnululu, Roebourne, Rudall, South Kimberley Interzone, Tanami Desert.
IMCRA Regions
Local Government Areas (LGAs)
Ashburton, Broome, Derby-West Kimberley, East Pilbara, Exmouth, Halls Creek, Karratha, Port Hedland, Wyndham-East Kimberley.