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.
This shrub is a native species found in sunny spots and wet places. The habit is shrub-like, erect or arched. The stem bears many slender awl-like scattered prickles, from an oblong, slightly-dilated base. The leaves are folded, hairy below. The basal leaflets are stalk-less. The stamens and style nearly equal each other. The fruiting calyx is erect to right-angled. The fruit is dark-red. The height is 1-2 ft. The plant flowers from June to August, and is a deciduous shrub.
Rubus nessensis, W. Hall = suberectus, And. - The habitat of this shrub is wet thickets, boggy woods, and heaths. The habit is shrub-like, the stem erect. The leaflets are pale-green, nearly smooth, flexible, flat, those at the base nearly stalkless, the upper ones narrow below. There are few, short prickles, conical, with a long base, at the angles, or absent. The pale stamens are longer than the style. The sepals are bent back. The fruit is dark-red. The plant is 3-6 ft. high, flowering in June and July, and is a deciduous shrub.
The habitat of this plant is wood borders. The habit is shrub-like, the stem suberect, the plant luxuriant. The stem is furrowed. The leaves are 5-lobed. The leaflets are large, distant, the basal ones stalked, the terminal long-stalked, with a long point, oval. The panicle is long, loose, in a raceme, and handsome. The stamens at first exceed the style. The fruiting sepals are turned back. The fruit is remarkably long.
Rubus plicatus, Wh. & N. - This Rubus is a native species, found in woods, heaths, and moors. The habit is shrubby. The stem is suberect. The leaflets are plaited, softly hairy below, coarsely toothed, the terminal leaflet egg-shaped, heart-shaped, with a short point, the basal one nearly stalkless. The lateral leaflets of the flowering shoot are rhomboidal, egg-shaped, enlarged at the base. The panicle is rather short, more or less a raceme. The stamens and style are of about the same length. The fruiting sepals are more or less at right angles. The plant is 4 ft. in height, flowering in June and July, and is a deciduous shrub.
Rubus nitidus, Wh. & N. - The habitat of this plant is thickets, heaths, and stream sides. The habit is shrub-like. The stem is suberect, rooting. The leaves are shining (like the calyx). The mature leaves are flat, the leaflets bright-green, thinly hairy on the prominent nerves below, the terminal oval, oblong, acute, the basal shortly-stalked. The prickles are numerous, long, slender, crowded, straight, or hooked, especially on the panicle. The panicle bears many small cup-like flowers. The stamens are longer than the style.
Rubus affinis, Wh. & N. - The habitat of this species is open woods, sandy commons, and heaths. The habit is shrub-like, the stem suberect or arched, not rooting, very tall. The prickles are long and narrow. The leaves are thick, overlapping, wavy at the end, grey, silky below. The terminal leaflet is egg-shaped, cordate, with a long point, those of the flowering shoot narrowed below. The panicle bears cymose branches, and is armed with long, slender prickles. The flowers are large and cup-like. The sepals are bent back. The plant is very tall, flowering in July and August, and is a deciduous shrub.