There are occasional areas with broad-leaved trees, including aspen, rowan, alder and goat willow. The site consists of a wet meadow with white willow, crack willow and goat willow. There are thickets of bramble, hawthorn, blackthorn, dogwood, goat willow, buckthorn and dog-rose. Both tannin and salicin can be extracted from goat willow bark. In Scandinavia it has been fairly common to make willow flutes from goat willow cuttings. "Salix caprea" (goat willow) and "Salix cinerea" (grey willow). Elsewhere it has been found on goat willow ("S. caprea") and purple willow ("S. pururea"). The few exceptions include the goat willow ("Salix caprea") and peachleaf willow ("Salix amygdaloides"). Aspen ("Populus tremula"), Goat Willow ("Salix caprea"), and Grey Alder ("Alnus incana").