Small shrubs, commonly deciduous. Twigs slender, terete or more usually ribbed or grooved; pith small, roundish, continuous. Buds small, solitary, sessile, round-ovoid, with about 4 scales. Leaf-scars alternate, elevated on a leaf-cushion, minute; bundle-trace 1, indistinct; stipules or minute stipule-scars present.

Fig. 171. Cytisus scoparius

Fig. 171. Cytisus scoparius.

1. C. scoparius (L. ) Link. Scotch Broom. A shrub 1-2 m. high, with glabrous stiff green branches; twigs finely granular, almost winged on the ridges. Introduced from Europe and naturalized (Fig. 171).