A very variable annual, up to 2.5 m. in height. Leaves very variable, elliptic-ovate or lanceolate, glabrous or densely tomentose beneath; flowers greenish white, in dense spikes; nuts black, glossy.
Herb Effects
Antibacterial activity, antiseptic and astringent (plant)
In urinary tract diseases and dissolving kidney stones. It is applied externally to burns.
Contraindication
People with a tendency to rheumatism, arthritis, gout, kidney stones or hyperacidity should take especial caution if including this plant in their diet since it can aggravate their condition.
Reference
Stary, The Natural Guide to Medicinal Herbs and Plants.