Radyera farragei (F.Muell.) Fryxell & S.H.Hashmi Knobby Hibiscus
Bot.Gaz. 132:62 (1971)

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

Brief Description
Grazyna Paczkowska, Tuesday 24 September 1996

Erect, spreading shrub, 1-3.5 m high. Fl. purple-blue, Jan to Dec. Often on red sandy or loamy soils, granitic stony soils.


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

IBRA Regions: Avon Wheatbelt, Central Ranges, Coolgardie, Gascoyne, Geraldton Sandplains, Hampton, Mallee, Murchison, Nullarbor, Yalgoo.

IBRA Subregions: Augustus, Avon Wheatbelt P1, Avon Wheatbelt P2, Central band, Nullarbor Plain, Eastern Goldfield, Eastern Murchison, Geraldton Hills, Hampton, Mann-Musgrave Block, Mardabilla, Southern Cross, Tallering, Western Mallee.

IMCRA Regions: Central West Coast.

Local Government Areas (LGAs): Coolgardie, Dalwallinu, Dowerin, Dundas, Esperance, Greater Geraldton, Kalgoorlie-Boulder, Kondinin, Menzies, Merredin, Morawa, Murchison, Ngaanyatjarraku, Sandstone, Three Springs, Upper Gascoyne, Westonia, Wongan-Ballidu, Yalgoo, Yilgarn.

Scientific Description
Chris Hollister and Kevin Thiele, Wednesday 21 August 2019

Shrub. Stems hairy. Leaves 35-150 mm long, 28-105 mm wide, not lobed; margins sinuate; indumentum present, with stellate hairs; stipules present and persistent to older leaves. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 6.5-7 mm long; indumentum present, with stellate hairs. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 6-10 mm long, the lobes free, indumentum present, simple hairs (without tubercle bases) absent, stellate hairs present. Calyx green, 12-20 mm long, the lobes fused less than half their length, stellate hairs present. Corolla blue or purple, 40-50 mm long, hairs or scales present or glabrous, stellate hairs present. Stamens five or many, united and arising from a staminal tube around the style; filaments present, 0.7-2.5 mm long; anthers 1-1.5 mm long. Staminodes absent. Ovary hairs and scales absent (ovary quite glabrous); style 1, with a lobed or capitate stigma, 20-23 mm long, with one style branches or lobes, mostly glabrous. Flowering time January, February, March, April, May, June, July, August, September, October, November or December. Distribution Botanical Province Eremaean or South-West, IBRA Bioregion Gascoyne, Central Ranges, Yalgoo, Murchison, Coolgardie, Nullarbor, Hamton, Geraldton Sandplains, Avon Wheatbelt or Mallee.