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Daviesia horrida Meisn.
Prickly Bitter-pea

Lehm., Pl.Preiss. 1:54-55 (1844)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status

Divaricate shrub, 0.3-2 m high. Fl. yellow/orange & red/brown, Jul to Nov. Laterite or granite. Outcrops, rocky hillsides, flats.

Grazyna Paczkowska, Descriptive Catalogue, 4 June 1996

Scientific Description

Erect, shrub, spindly shrub (broom-like). Stems terete, spiny at least in part, glabrous; pustules or glands absent. Leaves or phylloclades clearly present, simple, alternate, not continuous with stem, 25-145 mm long, 3-20 mm wide, glabrous, flat with flat margins; margins entire; tubercles absent; pustules or glands absent. Stipules apparently absent even from the youngest leaves. Pedicel present, 4-5.2 mm long, glabrous. Bracteoles absent. Calyx 2.8-4.8 mm long, not accrescent, glabrous, ribbed; pustules or glands absent. Corolla 9-11 mm long, multicoloured, mostly yellow or orange, with some yellow or orange spots, streaks or blotches; claws present; standard 8.5-10 mm long, glabrous, not auriculate, wings 6.5-7.5 mm long, not auriculate, keel 6.5-7 mm long, beaked, not auriculate, glabrous. Stamens ten; anthers 0.2-0.3 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 6-7 mm long. Ovary sessile or subsessile, glabrous; style 7.5-8 mm long, glabrous, not bearded, terete. Fruit dehiscent (a pod or follicle), 10-18 mm long, 10-20 mm wide, sessile or subsessile, not constricted between the seeds, flat or compressed, glabrous, beaked. Flowers in July, August, September, October and November. Occurs in the South-West Botanical Province, in the Avon Wheatbelt, Jarrah Forest, Warren, Esperance and Swan Coastal Plain IBRA regions.

C. Hollister and K.R. Thiele, 24 October 2023


IBRA Regions
Esperance Plains, Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions
Fitzgerald, Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren.
IMCRA Regions
Local Government Areas (LGAs)
Albany, Armadale, Augusta Margaret River, Boyup Brook, Brookton, Busselton, Chittering, Collie, Cranbrook, Dardanup, Denmark, Donnybrook-Balingup, Gosnells, Kalamunda, Kojonup, Manjimup, Mundaring, Murray, Nannup, Perth, Plantagenet, Serpentine-Jarrahdale, Swan, Wandering, York.