In Sambucus and Viburnum the small white flowers are massed in heads; honey is secreted at the base of the styles and, the tube of the flower being very short, is exposed to the visits of flies and insects with short probosces.
Among forest shrubs are the willow, hazel, alder, shrub maple, birch, hawthorn, dogwood, elderberry, viburnum and snowberry.
The most abundant species of this forest were the oaks and chestnuts, of which a dozen have been collected; laurels, Viburnum, ivy, several Aralias, Dewalquea, a Thuja and several Ferns may be added.
Dicotyledonous leaves are not plentiful, the genera recorded being Andromeda, Cinnamomum, Zizyphus, Rhus, Viburnum.
At Rosemoor are collections of Cornus and Ilex, while Hyde Hall holds the collections of Malus (ornamental crab apple) and Viburnum.