Sumac, smooth and hairy, R. glabra* and R. typhina.*

Useful for the borders of large groups and belts. They may be cut down every year and allowed to sprout (as in Fig. 50). The young tops are handsomest. R. glabra is the finer species for this purpose. They usually grow 10-15 ft. tall.

Osbeck’s sumac, R. semialata var. Osbeckii.

Strong bush, 10-20 ft., with leaf-rachis strongly winged, the foliage pinnately compound.

Flowering, or fragrant currant, Ribes aureum.*‡

Well known and popular, for its sweet-scented yellow flowers in May; 5-8 ft.

Red-flowering currant, R. sanguineum.*

Flowers red and attractive; 5-6 ft. R. Gordonianum, recommendable, is a hybrid between R. sanguineum and R. aureum.

Rose acacia, Robinia hispida.*‡

Very showy in bloom; 8-10ft.