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 hedges. The plant has the tree or bush habit. Suckers are produced, but the plant when cultivated is usually grafted. The branches are straight, spineless, downy, the bark brown. The leaves are egg-shaped, elliptic, downy on the ribs below. The flower-stalks are hairless. The fruit, a drupe, is oblong, round to egg-shaped, yellow, or purple, or black. The plant is 6-20 ft. high, flowering in April and May, and is a deciduous tree.
The habitat of this plant is field and roadside hedges. The habit is arching, prostrate. The stem is olive-green. The prickles are numerous, wide-spreading or bent down, fairly strong. The leaves have lobes radiating from a common centre, with lateral lobes, overlapping, olive-green. The leaflets are coarsely, doubly, or irregularly toothed. The terminal leaflet is nearly round, broadly inversely egg-shaped, oval, .with long, blunt, and narrow point, heart-shaped. The panicle is long, cylindrical to pyramidal, loose, the branches wide-spreading, with 1-4 flowers forming a corymb. The sepals are wide-spreading or loosely turned back throughout. The petals are quite white.
Ritbus dumetorum, Wh. & N. - The habitat of this plant is hedges, waste ground, etc. The stem and panicle rachis are armed with many unequal, straight prickles, acicles, and gland-tipped organs. The leaflets are usually thick. The stipules are usually narrow. The panicle is long, regular, compound, the rachis hairy, strongly armed like the stem. The petals are large, round, hardly clawed. The fruit is partly imperfect, composed of few large drupelets, and the fruiting sepals are erect or partly spreading. The plant flowers in July and August. It is a deciduous shrub.
The habitat of this plant is waysides, roadsides, damp pastures, and the coast, etc. The habit is prostrate. The plant is stoloniferous, silky. The rootstock is slender, branched. The leaves are green above, interruptedly pinnate, with stolons from the axils, silky below. The leaflets are numerous, oblong, deeply toothed, the teeth tipped with silky hairs, or divided nearly to the base, alternate, close, stalkless, inversely egg-shaped, oblong, blunt. The stipules enclose the buds, and are hooded. The flowers are large, solitary, yellow, on axillary, solitary, slender stalks. The bracteoles are toothed. The achenes are smooth.
The plant is 3-12 in. long, flowering: from June to August, and is a herbaceous perennial.
The habitat of this rose is hedges, banks, bushy places. The plant has the shrub habit. It is intermediate between R. villosa and R. spinosissima, nearer the former. The plant is small, erect or arching, with short, sometimes arching branches. The prickles are unequal, crowded, straight, or hardly curved, passing gradually into bristles. The leaflets are doubly toothed, downy, glandular sometimes below, or smooth, open. The leaf-stalk and stipules are densely glandular and fringed with hairs. The flowers are 1-3, white or pink. The sepals are persistent, leaflike, simple or pinnate, glandular at the back. The flower-stalk is densely bristly. The fruit is erect, nearly round, with no disk, red, but is not often produced, and ripens late. The plant is 1-5 ft. high, flowering in June and July, and is a deciduous shrub.
Irish Rose (Rosa hibemica, Tempi.) - The habitat of this rose is hedges and bushy places. The habit is shrub-like, compact, erect. The plant is small, with short branches, which sometimes arch. The prickles are stout, few, scattered, passing into bristles, unequal, the larger curved. The leaflets have simple teeth, hairless or downy below, without glands, bluish-green above, the nerves below and midrib above with few hairs. The leafstalk is downy. The stipules are naked on the back, with a fringe of glands on the auricles or lobes. The flowers are pale-pink, up to 12, the stalks naked like the calyx-tube. The sepals are leafy, more or less persistent in fruit, naked on the back. The fruit is erect, nearly rounded, naked, with a small disk, blood-red, pitcher-like, with a narrow mouth, ripening in October. The plant is 1-3 ft. high, and flowers in June and July, being a deciduous shrub.