Collage of alder and willow: a mature weeping willow in an open field; a botanical illustration of Salix (willow) with long trailing leaves; a willow tree reflected in water; a botanical plate of Alnus (alder) with leaves and catkins; a tall alder in winter; and a riverside painting with willows leaning over the water.
21 April is Parilia, the Roman festival honouring Pales, a pastoral deity. It’s said on this day two fishermen refused to observe her rites. In anger she turned them into an alder and a willow. They still haunt the riverbank, the willow trailing branches like lines cast for fish.