An erect herb, annual, more or less pubescent, simple or somewhat branched, 1/2-1 1.2 ft. high stem firm, beset with pallid spreading or deflexed hairs, minutely glandular, subtetragonous above, subterete below, solid, pithy, leafy; branches ascending; leaves opposite, oblong, lanceolate or linear, obtuse, not very much narrowed at the base, sessile or the lowest shortly petiolate, strongly and obtusely toothed, scabrid hispidulous, viscid-glandular, grass-green when alive, somewhat dusky when dry, 1/2-2 1/2 in. long, 1/8-3/8 in. broad, mostly equalling exceeding the internodes ; flowers sessile, 1/2-3/4 in. long, numerous quadrifariously arranged; spike terminal, dense, leafy or bracteate oblong, elongated in fruit, 3/4-5 in. long ; bracts ovate or lanceolate, dilated or cordate at the base, equalling or exceeding the calyx, entire or few-toothed, often acuminate, obtuse, viscid-hairy; calyx ovoid, somewhat inflated, tetragonous, viscid-pubescent, 1/4-1/3 in. long, shortly 4-cleft; lobes deltoid, pointed; corolla usually golden yellow, 1/2-3/4 in. long; tube 1/5-1/4 in. long; upper lip narrow, 1/3-2/5 in. long, somewhat arched, glandular-pubescent outside; lower lip dilated, bifid, 2/5-1/2 in. long, middle lobe the smallest; palate elevated double; anthers pendulous, blunt at the apex, more or less bearded with jointed subglandular hairs or at length glabrous; style hispid-pubescent, not very slender, exceeding the stamens, decurved toward the apex; stigma somewhat thickened, obovoid, bifid; capsule ovoid, coriaceous, pubescent, obtuse or shortly acuminate, 1/4-1/3 long, turgid, somewhat compressed, bisulcate; seeds numerous, small, dusky, ovoid, curved, longitudinally costate.
Erect, glandular, hemiparasitic annual to 50 cm. Leaves coarsely lobed. Flowers sessile, bilabiate, cream-coloured with a red lip.