248 
BRITISH WILD FLOWERS. 
plant is a perennial, retaining its leaves all the winter ; and the flowers, which are small and of a very pale lilac, 
expand in June and July. 
THE ALPINE BUTTERWORT. (P. alpina, Lin.) 
The flowers are of a pale yellow, and somewhat larger than those of the preceding species. The plant is a 
perennial, found only in the North of Scotland, and it flowers from June till September. 
GENUS II. 
THE HOODED MILFOIL. (Utricularia, Lin.) 
Lin. Syst. DIANDRIA MONOGYNIA. 
Generic Character. —Calyx Uvo-leaved ; the lips equal and undivided. Corolla personate; the lower lip spurred at the base. Stamens two, 
the filaments bearing the anthers on their inner face at the top. (11. Br.) 
Description, &c. —The species of this genus are all aquatic plants, with fibrous floating roots, and of curious 
construction. “‘The stem,” says Sowerby, “floats horizontally under water: it is divided into alternate 
capillary branches, with bristly leaves ; the stem or leaves bearing little compressed bladders, which, during the 
season of flowering, contain air, at other times water; so that the flower-spikes, when in bloom, are kept 
above the water,—a circumstance necessary to the proper action of the pollen,—but sink to ripen the seed. 
Aquatic insects frequently take up their lodging in these bladders. The flowers appear after Midsummer. 
Buds formed among the leaves at the ends of the shoots become perfect plants the following season.”— Eng. Bot. 
2nd edit., vol. i. p. 19.—The name of Utricularia is derived from Utriculus, a little bladder ; and the genus is 
placed in the Linnsean class and order Diandria Monogynia, because it has two stamens and a single style. 
I.—THE BLADDERWORT, OR COMMON HOODED MILFOIL. (Utricularia vulgaris, Lin.) 
Engravings_ Eng. Bot., t. 253; 2nd ed., t. 27 ; and our fig. 8, PI. 46. 
Specific Character. —Spur conical. Stalk straight. Cluster somewhat corymbose. Upper lip of the corolla the length of the palate, 
reflexed at the sides. ( Smith .') 
Description, &c. —This species is found in ditches and deep standing pools, in various parts of Great 
Britain. It is a perennial, and it flowers in June. 
THE INTERMEDIATE HOODED MILFOIL. (U. intermedia, Hayne.) 
This species is rare, but it has been found both in Ireland and Scotland. The flowers are small and yellow, 
and they appear in July. The plant is a perennial. 
THE LESSER HOODED MILFOIL. (U. minor, Lin.) 
This species has very small yellow flowers, which appear in July. It is a perennial, and grows in bogs 
and in ditches near Norwich. 
