Small amount of minerals and electrolytes

It also contains small amount of minerals and electrolytes like potassium, phosphorus, and zinc and iron. Potassium is an important component of cell and body fluids helps controlling heart rate and blood pressure; thus, counters bad influences of sodium. The leaves are alternate, nearly evergreen, elliptic or oblongelliptic, slightly leathery, rich green and glossy on the upper surface, coated with silky, goldenbrown pubescence beneath when mature, though silvery when young.