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 species is wood borders and hedges. The habit is erect, and arching, the stem shining (hence nitidus, Bell Salter), glossy. The leaflets are inversely egg-shaped, wedge-shaped, wavy-edged, with irregular, shallow teeth, and narrow below. The panicle has a long, broad, cylindrical, blunt top, and long, nearly equal, widespreading branches, in a cyme. The rachis is hairy. The petals are white. The fruit and drupelets are small. The plant flowers in July and August, and is a deciduous shrub.
Rubus argenteus, Wh. & N. ( = erythrinus, Genev.). - The habitat of this species is woods, hedges, and open sunny places. The habit is high-arching. The stem is dark-purple (hence erythrinus). The prickles have a wide base. The leaflets are leathery, with an ash-coloured felt below, the dark-purple of the stem extending frequently to the leaf-stalk and midrib, convex, inversely egg-shaped, with a blunt, long point, the terminal leaflets long-stalked, broadly egg-shaped. The panicle is loose, pyramidal, with a narrow, rounded top, and strongly - ascending lower branches. The fruit and drupelets are large. The panicle distinguishes it from the last, as well as the leaves, fruit, and colour of the stem, etc.
Rubus durescens, W. R. Linton. - This plant is found in hedges by the roadside, and in woods. The habit is arching. The stem is purplish, with leathery leaflets, brownish-green, hairless on the upper surface, with a few short, stiff hairs on the prominent nerves below, the larger teeth wide-spreading. The leaflets are oblong, egg-shaped. The terminal leaflets are egg-shaped, heart-shaped. The panicle is broad, short, cylindrical, in a corymb, the branches widespreading, forming a cyme, the top broad but hardly blunt. In the panicle the plant resembles R. Lindleianus. The colour and leaves, etc, are as in R. erythrinus.
Rubus rhamnifolius, Wh. & N. - The habitat of this species is wood borders, thickets, and hedges. The habit is arching. The leaflets are thick, flat, with ash-coloured or white felt below, and finely-pointed close and simple teeth, the terminal ones often not twice the length of the leaf-stalk, with a blunt point, and heart-shaped below. The terminal ones are very long-stalked, roundish, egg-shaped, heart-shaped. The basal ones are not overlapping. The panicle is rather close and cylindrical, the flowers cup-like, the petals roundish, white. The sepals are turned back. The stamens are erect and longer than the style. The plant flowers in July and August, and is a deciduous perennial.
Rubus nemoralis, P. J. Muell. - The habitat of this plant is wood borders and hedges. The habit is arching. The leaflets are pale-green both sides, rather finely and evenly toothed, paler, and thinly hairy below. The panicle is very loose, ascending, leafy, at first pyramidal, then forming a corymb, with several simple floral leaves above, and very long lower strongly-ascending branches forming a raceme-like corymb. The petals are pink. This species is handsome, strong, long. The narrow base of the terminal leaflet is heart-shaped as age advances. The numerous floral leaves, the long lower branches of the panicle distinguish this species. Its nearest ally is R. rhamnifolius.