An erect or ascending herb, annual, glabrous below, slightly puberulous above, shining, slender, simple or branched from the base, 3-15 in. high; stem and branches quadrangular, smooth or nearly so; upper internodes long; leaves opposite, linear or oblong, the linear subentire, the oblong dentate or pinnatipartite with linear or small segments, obtuse, sessile or the lower almost petiolate, 1/3-3/4 in. long, 1/50-3/8 in. broad; racemes terminating the stem and branches, oblong or short, blunt, 1-6 in. long, several-flowered; bracts alternate, small, entire; common peduncles ranging up to 4 in. long; pedicels inserted in the axils of the bracts, 1/6-3/4 in. long, slender; calyx-segments linear-oblong or linear, 1/24-1/12 in. long, obtuse; corolla 1/4 in. long, golden or pale yellow, or nearly white; upper lip very short; lobes rounded; spur straight, narrowly conical, obtuse, 1/15 in. long, longer than the upper lip, shorter than the lower; capsule campanulate, compressed, 1/5 in. long and broad, nearly equal at the base; valves 2, obliquely truncate at the apex along curved lines which make an obtuse angle with each other and terminate on the outer sides in short diverging points.
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Slender annual to 25 cm. Leaves opposite, narrowly pinnatisect. Flowers in racemes, orange-yellow, sometimes white, lower lip with a velvety palate with 2 raised bosses, upper lobes minute, rounded, spur ± 1 mm long. Capsules small, triangular.
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