This section is from the book "British Wild Flowers - In Their Natural Haunts Vol5-6", by A. R. Horwood. Also available from Amazon: A British Wild Flowers In Their Natural Haunts.
The habitat of this tree is moist woods, river banks, etc. The White Poplar has the tree habit. The bark is grey and smooth. The branches are spreading. The buds are cottony. There are many suckers. The leaves are triangular, egg-shaped, 5-lobed, and toothed. The leaves are smooth at length, downy in bud, roundish, heart-shaped, wavy, white and cottony below. The leaf-stalk is long, slender, flattened. The catkins are cylindrical, the males hairy, longer. There are 6-10 stamens, and the anthers are purple. The stigmas (2-4) are linear, yellow, cross-like. The capsules are egg-shaped, narrow. The tree is 60-100 ft. high, flowering in March and April, and is a deciduous tree.
The habitat of this willow is woods, copses, hedges, stream-sides, etc. The habit is that of a small tree or shrub. The stem is grey. The leaves are egg-shaped, elliptic, lance-shaped, acute, with a long point, scalloped, reticulate, cottony below, flat, wavy at the border, deep-green, whitish above. The twigs and buds are downy. The stipules are small, narrow, rather kidney-shaped or moon-shaped. The catkins are short, silky, with bracts, blunt and thick, stalkless, the female longer, the male oblong. The female catkins nod at length. The scales are hairy. The style is short. The capsule is silky. The stalk is slender. The Sallow is 10-30 ft. high, flowering before all others in April and May.
The habitat of this species is woods, moist copses, heaths, etc. The habit is as in the last, with straggling branches with reddish twigs. The leaves are wrinkled when young, reddish, scalloped, crisped, stalked, downy, netted below, the point hooked, edges bent down. The buds are smooth. The stipules are large, kidney-shaped, the catkins stalked. The catkins appear before the leaves, are shorter than in the last, the male egg-shaped, the female cylindrical. The stigma is usually entire. The style is short. The scales are persistent. The capsule is cottony, narrower, awl - like, lance-shaped. The Eared Sallow is 2-4 ft. in height, flowering in April and May, and is a deciduous shrub.
The habitat of this species is woods and wet places. The plant has the tree or shrub habit. The buds and twigs are cottony. The leaves are elliptic to oblong, lance-shaped, inversely egg-shaped, acute, toothed, the borders wavy, downy above, bluish-white or ashy (hence chierea) below. The stipules are large, half heart-shaped. The male catkins are not so stout as in the Sallow, and open later. The anthers are pale yellow, the anther-stalks hairy at the base, the stigmas simple or divided into two nearly to the base. The capsule is lance-shaped and awl-like. The plant is 10-20 ft. high, flowering from March to April, and is a deciduous shrub or tree.