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 northern rocky woods or western wooded rocky districts. The habit is erect or ascending, the stem downy, stout, with tendrils or petioles reduced to a short slender point or wanting. The leaves are stalkless, the leaflets are egg-shaped, oblong, linear, acute, hairy, in 7-10 pairs. The stipules are half-arrow-shaped, toothed below. The 6-20 flowers are white with a purple tinge, in loose racemes, ranged on one side. The flower-stalk is longer than the leaves. The calyx teeth exceed the tube, the upper two being triangular and longer than the flower-stalks. The pods are oblong, lance-shaped, acute below and above, smooth. The seeds are 3-5. The plant is 1-2 ft. in height. It flowers in May and June, and is a herbaceous perennial.
The habitat of this plant is woods, thickets, rocky woods, and cliffs, etc. The habit is trailing. The rootstock is creeping. The stem climbs by forked tendrils. The leaves are stalkless, the leaflets oblong, blunt, with a blunt point, smooth, membranous, in eight pairs. The stipules are moon-shaped, toothed below, the teeth bristle-like, spreading. The flowers are white with blue veins, in loose racemes, 6-18, ranged all one side. The flower-stalk exceeds the leaves, and the ultimate stalks are as long as the calyx tube, which is inflated on the upper side. The calyx teeth are not so long as the tube, awl-shaped. The pods are oblong, lance-shaped, with a long point, each end curved, with 3-4 seeds. The height of the plant is 2-6 ft., and it flowers from June to August, be ing a herbaceous perennial.
The habitat of this species is woods, thickets, rocky thickets, and sea cliff's. The habit is climbing, the root-stock creeping. The stem is winged, the plant being smooth, bluish-green. The leaflets are large, broad, sword-shaped, with parallel veins, linear-lance-shaped. The stipules are half-arrow-shaped, sickle-like, with lance-shaped basal lobes. The leaf-stalk is sometimes also winged. The tendrils are slender and branched. The bracts are thread-like. The flowers are purple, in a raceme, 3-10, on long flower-stalks, the ultimate stalks longer than the calyx. The standard is rose-colour, the wings purple. The calyx teeth are awl-shaped, triangular. The smooth pods are stalkless, winged above, with 10-14 seeds half-enclosed by the hilum and flattened along the border, rough, with few distant wart-like knobs. The plant is 5-6 ft. in height, flowering from July to September, and is a herbaceous perennial.
The habitat of this vetch is woods and bushy places, thickets, copses. The stem is winged and simple, without tendrils. The leaves have lobes each side of a common stalk, the leaflets in 2-4 pairs, though green below, with nerves, oblong, elliptic, smooth, blunt. The stipules are half-arrow-shaped, toothed below. The 2-4 flowers are variegated red and blue, turning green or yellow when faded, on slender stalks, as long as, or longer than, the leaves, the ultimate stalks less than the calyx, with triangular teeth less than the tube. The pods are cylindrical, with round seeds, partly surrounded by the hile. The plant is 6-15 in. in height, and flowers from May to August, being a herbaceous perennial.