Thomasia macrocalyx Steud.
Lehm., Pl.Preiss. 1:230 (1845)

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

Brief Description
Grazyna Paczkowska, Wednesday 2 October 1996

Erect, bushy shrub, 0.3-1 m high. Fl. pink-purple-blue, May to Dec. Lateritic or granitic soils. Sandplains, hills, breakaways.

Distribution

Beard’s Provinces: South-West Province.

IBRA Regions: Avon Wheatbelt, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Mallee, Swan Coastal Plain.

IBRA Subregions: Avon Wheatbelt P1, Avon Wheatbelt P2, Eastern Mallee, Fitzgerald, Lesueur Sandplain, Northern Jarrah Forest, Perth, Recherche, Southern Jarrah Forest, Western Mallee.

IMCRA Regions: WA South Coast.

Local Government Areas (LGAs): Albany, Beverley, Brookton, Capel, Carnamah, Collie, Coorow, Corrigin, Cranbrook, Cuballing, Cunderdin, Dandaragan, Donnybrook-Balingup, Esperance, Gnowangerup, Jerramungup, Katanning, Kojonup, Kulin, Lake Grace, Moora, Narembeen, Narrogin, Northam, Pingelly, Plantagenet, Tammin, Three Springs, Toodyay, Victoria Plains, Wagin, West Arthur, Williams, Woodanilling, York.

Scientific Description
Chris Hollister and Kevin Thiele, Saturday 12 November 2016

Shrub. Stems hairy. Leaves 15-35 mm long, 5-11 mm wide, not lobed; margins entire or crenate; indumentum present, with stellate hairs; stipules present but early deciduous (only visible on youngest leaves), 5-10 mm long. Perianth of two whorls but the corolla reduced to small scales or tiny lobes at the base of the ovary. Pedicel present, 7-7.5 mm long; indumentum present, with stellate hairs. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 6.5-10 mm long, the lobes free, indumentum present, stellate hairs present. Calyx pink, blue or purple, 6.8 mm long, the lobes fused less than half their length, stellate hairs present, number of ribs present, one. Corolla 1.4-2 mm long, glabrous. Stamens five, free and inserted at the base of the ovary; filaments present, 2.2-3.8 mm long; anthers 2.8-3.5 mm long. Ovary hairs and scales absent (ovary quite glabrous); style 1, with a lobed or capitate stigma, 3.2-5.2 mm long, with one style branches or lobes, mostly glabrous. Flowering time May, June, July, August, September, October, November or December. Distribution Botanical Province South-West, IBRA Bioregion Geraldton Sandplains, Swan Coastal Plain, Avon Wheatbelt, Jarrah Forest, Mallee or Esperance.