Bothriocline Oliv. ex Benth.

 Perennial or rarely annual herbs, often with annual shoots from a woody rootstock, or shrubs; indument of flagelliform or asymmetric T-shaped hairs, with uniseriate multicellular stalks each bearing an elongate erect or eccentric terminal cell. Leaves alternate, opposite or mixed, or whorled, aromatic, variously serrate. Capitula rarely few, usually numerous in lax to often congested terminal and upper axillary compound corymbiform cymes; bracteoles usually inconspicuous; involucres hemispherical to narrowly obconic-cylindrical, phyllaries 3-5-seriate, the inner progressively longer than the outer, imbricate, usually darker and often pubescent centrally below the apex, with often conspicuous pale membranous margins fimbriate-pectinate towards the apex; receptacle plane or alveolate, rarely paleate. Florets little to rather conspicuously exserted from the involucre, with cylindrical tube and infundibuliform limb, glandular and in the lower part often sparsely pubescent, lobes 5, narrow, glabrous or rarely with a few hairs at the apex, purple, mauve, lilac, blue or white; anthers subacute at base, the distal appendage lanceolate; style distally hairy, the long arms also hairy. Achenes brownish, prismatic or cylindrical, generally with 4-8 rounded ribs, usually glandular between the ribs, with or without a denticulate cartilaginous apical collar; pappus very caducous, of few short, slightly barbellate bristles, or absent.