Small soft-wooded deciduous shrubs. Twigs round, moderate to thick; pith relatively large, roundish, continuous, pale. Buds solitary, sessile or short-stalked, globose to oblong, with 4 to 6 scales. Leaf-scars opposite, crescent-shaped, rather large, often connected by lines around the stem; bundle-traces 3, 5, or 7; stipule-scars none. Fruit a membranous capsule, persistent in winter with the flat-topped inflorescence (cyme).

1. H. arborescens L. Wild Hydrangea. A bushy shrub 3-25 dm. high; twigs glabrous or nearly so; buds oblong, spreading. Rich woods, Florida to Louisiana and Oklahoma, north to New York and Missouri (Fig. 112).