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Thomasia grandiflora Lindl.
Large Flowered Thomasia

Reference
Sketch Veg.Swan R. xviii-xix (1839)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Multi-stemmed shrub, 0.15-1 m high. Fl. pink-purple, Jul to Nov. Usually lateritic gravelly soils.

Grazyna Paczkowska, Descriptive Catalogue, 2 October 1996
Image

Scientific Description

Shrub, with hairy stems. Leaves 20-48 mm long, 4-25 mm wide, not lobed; margins entire or sinuate; hairy, with stellate hairswith scales absent, Sessile glands absent; stipules present but early deciduous (only visible on youngest leaves), 10-15 mm long. Perianth of two whorls but the corolla reduced to small scales or tiny lobes at the base of the ovary. Pedicel present, 4-6 mm long; indumentum present, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 6.2-9 mm long, the lobes free, indumentum present, stellate hairs presentwith scales absent, Sessile glands absent. Calyx pink or purple, 8-11 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 0.5-1 mm long, glabrous. Indumentum (outside) Sessile glands absent. Stamens five, free and inserted at the base of the ovary; filaments present, 2-3 mm long; anthers 5-5.2 mm long, indumentum absent (anthers glabrous). Staminodes present, appendages absent. Ovary hairs or scales present, simple hairs absent, stellate hairs present, gland-tipped hairs absent; style 1, with a lobed or capitate stigma, 3-4 mm long, with one style branches or lobes, mostly glabrous, wing absent. Flowering time July, August, September, October or November. Distribution Botanical Province South-West, IBRA Bioregion Geraldton Sandplains, Swan Coastal Plain, Avon Wheatbelt, Jarrah Forest, Mallee, Warren 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, Warren.
IBRA Subregions
Dandaragan Plateau, Eastern Mallee, Fitzgerald, Geraldton Hills, Katanning, Lesueur Sandplain, Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren, Western Mallee.
IMCRA Regions
Central West Coast.
Local Government Areas (LGAs)
Albany, Armadale, Augusta Margaret River, Beverley, Boyup Brook, Bridgetown-Greenbushes, Bunbury, Busselton, Canning, Capel, Chapman Valley, Chittering, Collie, Coorow, Cranbrook, Dandaragan, Dardanup, Donnybrook-Balingup, Esperance, Gnowangerup, Gosnells, Greater Geraldton, Harvey, Irwin, Jerramungup, Kalamunda, Kent, Manjimup, Moora, Mundaring, Nannup, Northampton, Ravensthorpe, Serpentine-Jarrahdale, Swan, Three Springs, Toodyay, Victoria Plains, Wandering, Waroona, West Arthur, York.