A natural bigeneric hybrid between Halimium umbellatum and Cistus salviifolius found wild in France. It was introduced and cultivated first by Sir Oscar Warburg in his garden at Boidier near Epsom about 1929. Being very attractive and satisfactorily hardy, it has become pretty well known in gardens. It is an evergreen shrub, 15 to 18 in. high, of spreading but close growth, with linear to linear-oblanceolate leaves, 1⁄3 to 11⁄2 in. long and 1⁄12 to 3⁄16 in. wide, hairy especially beneath. Flowers white, up to 11⁄8 in. across, opening in June and borne in abundance.