Annuals; stems branching from the base, supine, light brown, long up to about 1 m; all are silk-like soft hair. Double pinnate alternate, 1.5-5 cm long; leaflets 6-14, opposite, oblong, 6-15 mm, 2-5 mm wide, apex acute or obtuse, base slightly oblique, nearly circular, entire. Flowers small, yellow, solitary and axillary; pedicels short; sepals 5, persistent; petals 5; stamens 10, raw disk base, ...