117. Poppy, Corn-Rose, Papaver Rhoeas, Poppy family. Stem 1 to 2 ft. high, rough with hairs: the leaves are oval and deeply feather-divided into notched segments: the flowers are large, with 4 scarlet petals, the bases of which are black: the seed-vessel is roundish and smooth: common in corn-fields, flowering in summer. P. Argemone, the Prickly-headed Poppy, is also fairly common: it has smaller, paler flowers, and long seed-vessels, covered with stiff hairs.

117. Poppy, Corn-Rose.

118. Purple Clover.

118. Purple Clover, Trifolium pratense, Vetch family. The stem is prostrate at the base, and then rises to a height of about 1 ft., bearing dense, oval heads of many, deep crimson, almost purple flowers: the leaves are compound, with 3 oval leaflets, and are provided with stipules: common in fields and pastures, and very frequently cultivated as a fodder plant: flowers throughout summer.

119. Marsh Cinquefoil, Potentilla palustris, Rose family. A common marsh plant: the stem rises from the water: the leaves are feather-compound with 5 to 7 elliptical, serrate leaflets, and have stipules: the flowers are large, occurring in small groups at the tip of the stem, and are deep crimson-brown, or with a purple tinge, in colour: flowers in August.

120. Scarlet Pimpernel, Poor Man's Weather-Glass, Ana-gallis arvensis, Primrose family. The stem is branched, lying along the ground, and rising at the tips: the leaves are in pairs, sessile, and ovate in shape: the flowers arise singly on slender stalks from the leaf axils; they are small, star-like, and bright scarlet: a weed of dry, sandy soil, flowering in summer: this pretty little plant owes its second English name to the fact that the flowers close up in damp weather.

119. Marsh Cinquefoil.

120. Scarlet Pimpernel, Poor Man's Weather-Glass.

121. Sheep's Sorrel, Rumex Aceto-sella, Dock family. A weed, the occurrence of which in abundance is a sure indication of poor soil: it is readily recognised by its leaves, which are smooth, bright green,and halbert-shaped: the flowers are small and inconspicuous, but gathered in a branched spike at the end of the stem (9 ins. high) they make a bright show of crimson variegated with green. R. Acetosa, the Sorrel, or Sotirock, has arrow-shaped leaves of a pleasant acid flavour much appreciated by children.

121. Sheep's Sorrel.