. Flowers of the field. Botany. 76 CALYCIFLOR^ ;—Sir W. J. Hooker. Woods; not uncommon, especially in the west of England.—Fl. May, June. Perennial. 10. L. Niger (Black Bitter Vetch).—Stem branched, erect, 1-2 feet high, angular, but not winged ; stipules very narrow ; root not tuberous ; flowers 6-8 together ; the plant turns black in dying. A very rare Scottish species.—Fl. June to August. Perennial. 15. Ornithopus [Bird's-foot) 1. 0. pcrpusilliis (Common Bird's-foot).—A minute and very beautiful plant, with spreading, prostrate stem ; downy leaves of 6-12 pairs of leaflets and a
. Flowers of the field. Botany. 76 CALYCIFLOR^ ;—Sir W. J. Hooker. Woods; not uncommon, especially in the west of England.—Fl. May, June. Perennial. 10. L. Niger (Black Bitter Vetch).—Stem branched, erect, 1-2 feet high, angular, but not winged ; stipules very narrow ; root not tuberous ; flowers 6-8 together ; the plant turns black in dying. A very rare Scottish species.—Fl. June to August. Perennial. 15. Ornithopus [Bird's-foot) 1. 0. pcrpusilliis (Common Bird's-foot).—A minute and very beautiful plant, with spreading, prostrate stem ; downy leaves of 6-12 pairs of leaflets and an odd one ; heads of 2 or 3 exceed- ingly small cream-coloured flowers, veined with crimson, with a leaf at the base of each head ; and jointed legumes, which become curved as they ripen, and bear a resemblance to a bird's foot. Sandy heaths; common.—Fl. July, .August. Perennial. 2. 0. ehradealus (Sand Bird's-foot).—In many resjjects similar to the last; the flowers are larger, the plant smooth and glaucous, and there is no leaf below the flower-head. Found in the Channel and Scilly Islands.—Fl. June to August. Annua!.. Ornithopus Pjir- pusiLLus (Common Bird's-foot) 16. HippocRKPis (Horse-shoe Vetch) I. H. comosa (Tufted Horse-shoe Vetch).— The only British species. A low, tufted plant, with much-branched stems, which arc woody at the base, and elegant leaves, composed of 6-12 narrow leaflets. The umbels of yellow might be mistaken for those of Lotus corniculatus, but for the curious structure of the seed-vessels, which are shaped like a series of horse-shoes, united by their extremities. The plant may also be distinguished by its pinnate leaves. Common on chalky banks. —Fl. May to August. Perennial. 17. Onobrychis (Saml-foin) I. 0. saliva (Common Saint-foin).—The only British .species. A handsome plant, often culti- vated as fodder in dry, chalky, and graveliy soils. The stems are ascending, 1-2 feet long ; the leaves are composed of 8-12 pairs o
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