Cytisus nigricans

Cytisus nigricans, the black broom, is a species of flowering plant in the subfamily Faboideae of the family Fabaceae. Growing 3–5 ft (0.91–1.52 m) tall, it is a slender deciduous shrub with erect branches. Masses of brilliant yellow, slightly fragrant pea-like flowers appear in long racemes on the current year's growth in summer and early autumn. The more compact cultivar 'Cyni', to 1 m (3.3 ft), has gained the Royal Horticultural Society's Award of Garden Merit. It is hardy but prefers a sheltered position in full sun, with poor soil. It is preferable to remove the mature seed pods in autumn....read more on Wikipedia.