|willow (Salix spp.)||
willow (Salix spp.; WILLOW FAMILY [Salicaceae]) Woody plants, which range from low shrubs to tall trees, including more than 30 species in Wisconsin. Leaves are alternate, have short petioles, teeth or not, and vary widely in shape among the many species. Buds appear as a single scale appressed to the stem. In all willow species, individual plants are either male or female, with small, non-showy, but insect-pollinated flowers in catkins. Most willows grow on wet, open sites. 
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