A spiny shrub to 2 m or more tall, waxy-blue at first. Leaves linear, to 3 cm long, spiny, grooved. Flowers mostly solitary, axillary, yellow; spring. Fruit pod 1-2 cm long, hairy.
W and C Europe.
Source: (2002). Fabaceae. In: . Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.