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 plant is thickets and hedges. The habit is arching, prostrate. The stem has many fine, silky hairs. The stalked glands are short, fairly numerous, unequally scattered. The leaflets are thin, hairy below, wrinkled above, large. The stipules are rather large. The panicle is spreading, loose, with a wavy rachis, with unequal, scattered, short, stalked glands, the branches few-flowered and straggling. The flowers are usually large, and so is the fruit. The sepals are narrow, erect in fruit, or widespreading. The stamens are short, or equal to the flesh-coloured style. The fruit is handsome, inversely egg-shaped. The plant flowers in July and August. The plant is a shrub.
Rubus Bucknalli, J. W. White. - This species grows luxuriantly in open glades and on the outskirts of aboriginal woodland, at an elevation of over 600 ft. on oolitic hills. The habit is arching, prostrate. The stem is greyish, densely hairy, the silky hairs curved and wavy, with resinous exudation in the young state. The prickles are numerous, scattered, nearly equal, straight, slender, bent down or widespreading. The leaves are made up of 5 leaflets. The leaflets are thick, dull-green, hairy both sides, toothed or lobed, broad, overlapping, heart-shaped below, the terminal one broadly heart-shaped, or egg-shaped, with a long narrow point. The leaf-stalks and midribs are armed with hooked prickles and stalkless minute glands. The stipules are linear, hairy, bristly. The panicle is long, narrow, leafy, with a close, blunt top, and distant, ascending, axillary branches, shorter than the leaves. The rachis and flower-stalks are armed with slender prickles, densely hairy, with scattered, stalked glands on upper part. The sepals are egg-shaped, narrow, glandular, bent back in fruit. The petals are broad and oval, touching, white. The anther-stalks are white, and exceed the green styles. This bramble is distinguished from R. Bal/ourtanus by the angular, densely hairy and prickly stem, absence of acicles and stalked glands, the long, narrow, close-topped panicle, and white corolla.
The habitat of the Dewberry is thickets, hedges, damp places. The habit is prostrate. The stem is round, bluish-white. The prickles are weak, short, and awllike. There are few or no stalked glands and acicles. The leaves are 3-lobed. The leaflets are thin, irregularly cut, and lobed. The stipules are usually very wide in the middle, tapering at both ends. The panicle is loose, with few flowers. The fruiting sepals are clasping, with long points. The drupelets are few, large, bluish-white, and acid. The plant is weak and slender. It flowers in June and July, and is a shrub.
The habitat of the Stone Bramble is moist woods and rocky thickets, stony mountains. The stem is herbaceous, rooting at the tip, annual. There are few, weak, and scattered, or no prickles, but the plant is hairy, very slender. The leaf is made up of 3 leaflets. The barren stem is whip-like, the flowering stem short, erect, simple, or branched, with acicles, and egg-shaped stipules. The terminal shoots form a corymb, with few flowers. The flowers are small. The petals are lance-shaped, erect, white, equalling the sepals. The stamens are longer than the styles. The flowering shoots are radical. The drupelets, 1-6, are large and deep-red. The plant flowers in July and August, and is a herbaceous perennial.