Glab., ± divaricate shrub up to 30 dm. or more tall; branchlets slender. Lvs of seedling and young plants 3-foliolate, on very slender petioles up to c. 2 cm. long; lflts ± 5-10 × 3-10 mm., ± rhomboid; margins crenulate to subentire. Lvs of mature plants mostly 1-foliolate, on slender flattened petioles up to 5 mm. long; alt. or clustered on short arrested branchlets; (5)-10-15-(20) × (5)-10-15-(20) mm., rhomboid to suborbicular, gland-dotted, crenulate. Infl. of 1-4 axillary fls, on very slender peduncles up to 5 mm. long; bracts minute, ovate. Fls perfect to unisexual, c. 5 mm. diam.; sepals minute, triangular; petals ± 3 mm. long, greenish to clear white; stamens exserted in ♂.♀ with pilose ovary; style exserted; stigma capitate, obscurely 4-lobed. Fr. and seed as in , but smaller.

2n = 36

n = 18