Deciduous trees, 10 to 12 meters. There are long, drooping branches, under branches brown glabrous, slightly hairy ... Leaves lanceolate or linear-lanceolate, long 9 ~ 16cm, width of 5 to 15, apex long acuminate, base shape. Flowering from ... the bark with.White Willow Bark Extract, plant extract, willow plants willow twigs or bark extract is used medicinally.Product Name:White willow bark extract Powder ...