A. gen evens is

(Geneva).* fl. varying from blue to rose colour and white; upper whorls spicate, lower ones distant, six or more flowered. May. l. stem ones oblong-elliptic or obovate, narrowed at the base; lower ones petiolate; floral ones ovate or cuneated; superior ones scarcely equalling the flowers or shorter, all usually coarsely toothed, membranaceous, green on both surfaces, and beset with scattered hairs. Stem erect, pilose. h. 6in. to 1ft. Europe. A very variable species, admirably adapted as an alpine plant, and succeeds best in bog soil, where its roots will have plenty of room; it increases rapidly. Perennial. S YNS. A. alpina, A. rugosa.