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Thomasia montana Steud.
Hill Thomasia

Reference
Lehm., Pl.Preiss. 1:230-231 (1845)
Conservation Code
Threatened
A taxon name retains its ‘Threatened’ status until a new name has been officially endorsed and appears in the Gazettal Notice.
Naturalised Status
Native to Western Australia
Name Status
Current

Upright shrub, 0.5-1 m high. Fl. blue-purple-red, Sep to Oct. Loamy soils. Rocky granite knolls, lateritic hills.

Grazyna Paczkowska, Descriptive Catalogue, 2 October 1996
Image

Scientific Description

Shrub, with hairy stems. Leaves 30-50 mm long, 6-25 mm wide, not lobed; margins entire; hairy, with stellate hairswith scales absent, Sessile glands absent; stipules present but early deciduous (only visible on youngest leaves), 13-18 mm long. Perianth of two whorls but the corolla reduced to small scales or tiny lobes at the base of the ovary. Pedicel present, 5.5 mm long; indumentum present, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 7-11 mm long, the lobes free, indumentum present, stellate hairs presentwith scales absent, Sessile glands absent. Calyx blue, purple or red, 8-14 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 0.5-1.6 mm long, glabrous. Indumentum (outside) Sessile glands absent. Stamens five, free and inserted at the base of the ovary; filaments present, 0.5-0.7 mm long; anthers 3-4.5 mm long, indumentum absent (anthers glabrous). Staminodes absent, 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, 4-5.8 mm long, with one style branches or lobes, mostly glabrous, wing absent. Flowering time September or October. Distribution Botanical Province South-West, IBRA Bioregion Avon Wheatbelt and Jarrah Forest. Conservation Code Threatened (T).

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

Distribution

IBRA Regions
Avon Wheatbelt, Jarrah Forest.
IBRA Subregions
Katanning, Northern Jarrah Forest.
Local Government Areas (LGAs)
Beverley, Brookton, Pingelly, York.