Mirbelia dilatata R.Br. Holly-leaved Mirbelia
W.T.Aiton, Hort.Kew. Ed.2,3:21 (1811)

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

Brief Description
Grazyna Paczkowska, Wednesday 24 July 1996

Erect or semi-weeping, prickly shrub, 0.5-3 m high. Fl. pink-violet-purple, Sep to Dec or Jan. Gravelly soils, laterite, sandy soils.


Beard’s Provinces: South-West Province.

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

IBRA Subregions: Avon Wheatbelt P2, Fitzgerald, Northern Jarrah Forest, Perth, Recherche, Southern Jarrah Forest, Warren, Western Mallee.

IMCRA Regions: Leeuwin-Naturaliste, WA South Coast.

Local Government Areas (LGAs): Albany, Armadale, Augusta Margaret River, Boddington, Brookton, Broomehill-Tambellup, Busselton, Capel, Collie, Corrigin, Cranbrook, Dardanup, Denmark, Donnybrook-Balingup, Dumbleyung, Esperance, Gnowangerup, Harvey, Kalamunda, Kondinin, Kulin, Lake Grace, Manjimup, Mundaring, Murray, Nannup, Narrogin, Northam, Pingelly, Plantagenet, Serpentine-Jarrahdale, Toodyay, Victoria Plains, Wagin, Wandering, Waroona, Woodanilling.

Scientific Description
C. Hollister and K.R. Thiele, Friday 4 December 2020

Erect, shrub, spindly shrub (broom-like). Stems terete, spiny at least in part, hairy; pustules or glands absent. Leaves or phylloclades clearly present, simple, alternate, continuous with stem, 12-25 mm long, 10-22 mm wide, glabrous, flat with flat margins; margins dentate; tubercles absent; pustules or glands absent. Stipules present but early deciduous ( only visible on youngest leaves ). Pedicel present, 3.5-6.5 mm long, hairy. Bracteoles present and persistent. Calyx 4.5-6 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 12.5-15.5 mm long, multicoloured, mostly pink or purple, with some pink or purple spots, streaks or blotches; claws absent; standard 11-12.5 mm long, glabrous, not auriculate, wings 11-13 mm long, not auriculate, keel 10-12 mm long, not beaked, not auriculate, glabrous. Stamens ten; anthers 0.5-0.7 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 8-10 mm long. Ovary hairy or glandular; style 11-11.5 mm long, hairy or glandular towards the base, not bearded, terete. Fruit dehiscent (a pod or follicle), stipitate, not constricted between the seeds, round in cross-section, not beaked. Flowers in January, September, October, November and December. Occurs in the South-West Botanical Province, in the Avon Wheatbelt, Jarrah Forest, Mallee, Warren, Esperance and Swan Coastal Plain IBRA regions.