This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(Latin, erinoceus, hedgehog, alluding to the spiny nature of the plant). Leguminosae. A low almost leafless shrub forming dense spiny tufts covered in spring with numerous blue flowers.
Deciduous, very spiny: leaves simple or ternate, pubescent, only present at the end of young branchlets: flowers 1-3, axillary toward the end of the branchlets; calyx tubular, with 5 short teeth, inflated after flowering; petals narrow, long-clawed, claws of the wings and keel adnate to the staminal tube; standard ovate, slightly auriculate at the base; stamens connate: pod oblong, glandular-hairy, 2-valved, 4-6-eeeded. - One species in S. W. Eu. Not hardy N.; likes limestone soil and a sunny position, best adapted to be planted in rockeries. Prop, by seeds.
Boiss. (Anthyllis Erinacea, Linn.). Shrub, to 1 ft.: leaflets 1-3, oblong-obovate or spatulate, 1/3-1/2 in long, pubescent: flowers 1-3, nearly 1 in. long, violet-blue, the petals exceeding the large inflated calyx only about one-third; the short pedicels, bractlets and calyx pubescent: pod about 3/4in. long. May, June. Mountains of S. France, Spain and Corsica. L.B.C. 4:318. B.M. 676. G.C. 111.41:310. Gn. 62, p. 127; 64, p. 399.