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 sea cliffs. The plant has the shrub habit. The stem is branched, erect, hoary. The leaves are entire or obscurely toothed, oblong to lanceshaped. The flowers are purple to violet. The pods are cylindrical, glandless. The seeds are round, winged. The plant is 1-2 ft. high, flowering in May and June, and is a herbaceous perennial.
The habitat of this plant is shores and sea sand. The plant has a spreading habit. The stem is herbaceous, woolly or downy, branched above. The radical leaves are stalked, linear, inversely egg-shaped or oblong, the lower leaves are wavy to toothed. The flowers are in a raceme, pale-lilac, fragrant at night. The pod is flattened at the border, prickly, glandular. The seeds are winged. The plant is 1-2 ft. high, flowering from June to August, and is a herbaceous perennial.
The habitat of this plant is sea cliff's. The plant is prostrate in habit. The rootstock is fleshy, cylindrical, stout, branched, leafy above. The stem is stout, twisted, scarred, persistent. The leaves are hairless, with stomata, the upper surface protected by waxy secretions, bluish-green, wavy, lobed, the lower with the lobes larger upwards, the upper stalkless, oblong, thick, fleshy, enlarged at the base, not auricled. The flowers are large, pale-yellow, in a long raceme before the flowers open. The calyx is erect, with closely-pressed sepals. The pods are spreading, flattened at the border, with a short awl-like beak, seedless, the valves keeled and nerved. The seeds are round. The plant is 1-2 ft. high, flowering between May and August, and is a herbaceous biennial or perennial.
The habitat of this plant is seashores, sandy western coasts. The habit is erect or prostrate. The stem is simple, hairless, leafless. The rootstock is stout and woody. The leaves are chiefly radical, hairless, stalked, deeply divided nearly to the base, with oblong lobes, with unequal teeth; the upper leaves linear. The flowers are pale-yellow. The pods are spreading, with a thick beak, 1-3 seeded. The valves are 3-nerved. The seeds are dark, dotted with pin holes, round. The plant is 6 in. to 2 ft. high, flowering between June and August, and is a herbaceous biennial.
The habitat of this plant is dry places. The plant has the same habit as the Isle of Man Cabbage. The stem is erect, leafy below, hairy below, branched. The leaves are hairy. In other respects the plant resembles B. monensis. It is 1-3 ft. high, flowering from June to August, and is a herbaceous biennial.
Stalked Scurvy. Grass (Cochlearia danica, L.). - The habitat of this plant is the sea-coast, sandy and muddy shores. The plant has the loose rosette habit. The lower stem-leaves are stalked, with 3-5 lobes, the upper leaves with short stalks, clasping, lobed. The radical leaves are triangular, heart-shaped, lobed, the stalks long, shortened farther from the root. The flowers are white, with small petals. The pods or silicules are egg-shaped, 2-celled, with 4-6 seeds in each cell. The seeds are flattened at the side. The style is short. The plant is 1-12 in. in height, and flowers between April and August, being a herbaceous biennial.
The habitat of this plant is mountains, seashores on the Scotch coast. The plant has more or less the rosette habit. The plant is small, tufted, fleshy. The radical leaves are numerous, fleshy, rounded to kidney-shaped, entire, stalkless. The upper stem-leaves are stalkless or shortly-stalked, elliptic, lance-shaped, or egg-shaped, spoon-shaped. The pod is more or less rounded, rhomboid to oblong. The style is short. The plant is 2-6 in. in height, flowering from June to August, and is a herbaceous biennial.
The habitat of this plant is salt marshes where native, and where introduced, old castles, etc. The habit is erect. The stem is branched. The plant is hairless, bluish-green. The rootstock is long, and the plant is stoloniferous. The radical leaves are long-stalked, oblong, coarsely-toothed. The stem-leaves are more or less stalkless, narrower, oval to lance-shaped, toothed or entire. The flowers are creamy-white, small, in short or compound, panicled, dense corymbs, with bracts. The pods are egg-shaped, downy, entire, on short stalks, the valves not winged. The style is very small. The plant is 2-4 ft. in height. It flowers in July and August, and is a herbaceous perennial.
The habitat of this plant is sandy, rocky shores, sea-coasts. The habit is as in Jointed Charlock, of which it may be regarded as the wild form, as the former is the wild form in turn of the cultivated R. salivus. The plant is more hairy. The root is thick. The radical leaves are interruptedly pinnate. The leaf-segments are numerous, close, overlapping, horizontal, or reversed, the alternate smaller. The flowers are smaller also, yellow, rarely white. The pod is jointed or moniliform with fewer joints, longer than the short beak, deeply constricted, the joints ribbed. The beak is slender, awl-like. The plant is 1-4 ft. high, flowering between June and August, and is a herbaceous biennial.