* Flowers axillary, growing in pseudo-whorls. A. reptans: glabrous or slightly hairy; stem forming creeping runners; leaves obovate, entire or coarsely toothed; flowers blue, the upper whorls crowded, forming a cylindrical leafy spike. - Woods and moist pastures. Fl. May.
** Flowers axillary, solitary or in pairs.
A. Chamaepitys: annual; leaves crowded, deeply cut into three linear lobes, the lateral of which are sometimes again divided; flowers yellow, shorter than the leaves. - Ground Pine or Yellow Bugle. - Sandy fields. Pl April, May.