Willow Identification Key: Tree not weeping Tree not weeping; top shoots upright; sometimes lower branches drooping Golden willow (Salix alba var. vitellina) and crack willow (Salix fragilis) in winter Leaves silky to slightly hairy beneath at maturity Leaves silky to slightly hairy beneath at maturity Silky: Refers to the feel of leaf (quick test: rub leaf between thumb and forefinger), this is hard to represent in a photograph) Leaves hairless at maturity Leaves hairless at maturity