Skip to main content

Thomasia macrocalyx Steud.

Reference
Lehm., Pl.Preiss. [J.G.C.Lehmann] 1:230 (1845)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

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

Grazyna Paczkowska, Descriptive Catalogue, 2 October 1996
Image

Scientific Description

Shrub, with hairy stems. Leaves 15-35 mm long, 5-11 mm wide, not lobed; margins entire or crenate; hairy, with stellate hairswith scales absent, Sessile glands absent; 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 present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 6.5-10 mm long, the lobes free, indumentum present, stellate hairs presentwith scales absent, Sessile glands absent. Calyx pink, blue or purple, 6.8 mm long, the lobes fused less than half their length, Sessile glands absent, simple hairs (without tubercle bases) absent, stellate hairs present, tubercle-based simple hairs absent, gland-tipped hairs absent, scales absent, Terminal appendages absent, number of ribs present, one. Corolla 1.4-2 mm long, glabrous. Indumentum (outside) Sessile glands absent. 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, indumentum absent (anthers glabrous). Staminodes absent, appendages absent. 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, wing absent. 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 and Esperance.

C. Hollister and K.R. Thiele, 11 August 2023

Distribution

IBRA Regions
Avon Wheatbelt, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Mallee, Swan Coastal Plain.
IBRA Subregions
Eastern Mallee, Fitzgerald, Katanning, Lesueur Sandplain, Merredin, Northern Jarrah Forest, Perth, Recherche, Southern Jarrah Forest, Western Mallee.
IMCRA Regions
WA South Coast.
Local Government Areas (LGAs)
Albany, Beverley, Boddington, 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, Ravensthorpe, Tammin, Three Springs, Toodyay, Victoria Plains, Wagin, West Arthur, Woodanilling, York.