Annual herb, 0.1-2.0 m, straight or procumbent, branched from base, grey-farinose, smelling of decaying fish. Leaves up to 2.5 x 2.3 mm, rhombic to ovate, entire with 2 flaring, basal lobes, densely grey-farinose beneath. Inflorescences terminal and axillary, leafy with small clusters. Sepals 5, not keeled. Seeds brownish black.
Stem herbaceous, erect, angular, very thinly pubescent, about 18 in. high; branches few, near the apex of the stem; leaves triangular, hastate with rounded angles, very obtuse, mucronate, entire, glabrous, about 1 in. long; petiole as long as the blade; racemes leafy, near the top of the plant.
Erect, annual herb, up to 400 mm tall. Leaves oblong, pinnately divided, sessile, yellow glands present. Flowers very small, in much-branched axillary compound cymes arranged in large terminal panicles.
Erect herb, up to 1.5 m high. Leaves triangular, hastate with rounded angles, mucronate, glabrous; petiole as long as blade. Flowers in terminal panicles. Flowers green.