White Poplar bark is whitish-grey and smooth above, becoming rough and furrowed at base (shown). The Willow family of trees (Salicaceae) has 350 or so species of willows and poplars, which are mainly natives of the Northern Hemisphere. The one uniting feature of all Salicaceaes is their flowers; they have neither petals nor sepals but are borne in catkins that usually appear with or before the tree's new leaves. Both willows and poplars prefer moist sites and hybridize so easily identification is sometimes difficult. These trees were growing along the banks of a small creek, along with various willows. |