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Annual, erect, branched herb 0.6-1 m tall; stems somewhat woody below, tomentulose. Leaves shortly petiolate; blade linear, 40-60 x 3-6 mm, minutely tomentulose, apex acuminate, base attenuate, margin entire or with a few distant minute teeth. Inflorescence of 1-few spaced verticils; verticils many-flowered, glomerate, 15-25 mm in diam.; bracteoles numerous, 5-10 mm long. Calyx tubular-obconical, minutely tomentulose, 7-8 mm long, mouth very oblique, 8-toothed, produced on the upper side into a conspicuous deltoid-ovate spine-tipped tooth, 2 mm long; remaining 7 teeth minute. Corolla 15-16 mm long; tube 5-6 mm long, annular-papillose just below the middle; upper lip horizontal, 5 mm long, hooded, with a dense fringe of stiff white brush-like hairs; lower lip 10 mm long.
A herb. It is erect and an annual plant. It grows up to 1 m high. It has a bad smell. The small branches are hairy. The leaf blades have almost no leaf stalks. The blades are narrowly sword shaped and 4-9 cm long by 0.5 cm wide. There can be small teeth along the edge. The flowers are in groups of 3-30 in the axils of leaves or at the ends of branches. The fruit are oblong small nuts about 2.5 mm long by 1 mm wide.
