Populus alba (White Poplar), P. deltoidea (Canadian Poplar), P. nigra (Black Poplar), Lombardy Poplar, and P. tremula (the Aspen). But the Poplars must not be overdone, and by pond or lakeside are often out of place. In such places the Cardinal and Yellow-barked Willow, Sea Buckthorn, and similar shrubs are more appropriate.
Common Alder, with its many varieties—Cut-leaved, the Golden-leaved, and such as Alnus incana and A. serrulata.
Taxodium distichum (Deciduous Cypress); tender green in spring and brownish red in autumn, when the leaves change colour.
Hippophaë rhamnoides (the Sea Buckthorn).
NATURAL TREE GROWTH BY WATER (Burnham Beeches.)
Trees and Shrubs for Moist (but not Swampy) Soil
Berberis Darwinii (Darwin's Barberry), B. Thunbergi (for its beautiful autumn leaf-colouring), Birch, Dogwoods, Cornus alba and varieties; the variety sibirica has brilliant-red stems. Cotoneaster buxifolia, C. frigida, C. Nummularia, C. Simonsii; Ash, Myrica Gale (Sweet Gale) and M. asplenifolia; Ledum palustre, Nyssa sylvatica (Tupelo tree), Mountain Ash, Quercus aquatica (Water Oak), Q. palustris (Swamp Oak); Rhamnus Frangula (Buckthorn). Roses with brightly-coloured hips—Rubus biflorus (White-stemmed Bramble), R. fruticosus fl. pl. (Double Pink Bramble). R. laciniatus (Cut-leaved Bramble), R. spectabilis (Salmon Berry). Sambucus racemosa (Red-berried Elder), Spiræa Douglasii, S. hypericifolia, S. lindleyana; Tamarisk. Viburnum Opulus (Guelder Rose); when this native shrub is weighed down with the rich red berry-clusters, it is a remarkable colour picture, and the autumn leaf tints add to its beauty.
Of Conifers, mention may be made of Tsuga canadensis, Picea sitchensis, Cupressus thyoides, and Thuya gigantea.
Bamboos: Select those of robust growth, such as Arundinaria japonica (Bambusa Metake), A. Simoni, A. Veitchii, and A. palmata; Phyllostachys viridi-glaucescens and P. mitis.