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A densely branched deciduous shrub up to 7 ft high. Branchlets appressed hairy when young, later glabrous. Leaves sessile or with a very short petiole, trifoliolate near the base of the shoot but entire towards the apex; leaflets about 1 in. long, 1⁄2 to 3⁄4 in. wide, elliptic-oblong to obovate, blade glabrous above, the margins and undersides clad with appressed silky hairs. The large flowers are borne singly in the leaf-axils; calyx campanulate, two-lipped; standard cream-coloured, blotched brown within; wings and keel yellow. Fruit hairy, about 11⁄4 in. long. Bot. Mag., n.s., t. 211.
This attractive broom was discovered by Capt. Collingwood Ingram in 1936 in N. Spain, between Corunna and Oviedo. In describing the species in the Botanical Magazine, Blakelock remarks that it bears some resemblance to C. grandiflorus in its large flowers and sessile leaves but is not (as that species is) a member of the section Sarothamnus; its nearest relative is C. villosus, a species of the W. Mediterranean. It is hardy in all but the severest winters and flowers in June.