. Contributions to the botany of Vermont. Plants -- Vermont. 50 Bulletin 73 Willows are coininonly introduced a8 shade trees because they are so easily prop:^gated by cuttings. Care should be taken, however, to select the stamen-bearing trees, both because these are more ornamental when in flower and because they do not produce the downy fruit which is often dis- agreeable when they are growing near houses. The following key, while not entirely satisfactory, may aid in recog- nizing the three tree willows. Smaller, slender, native trees, bark rough, twigs dark Black Willow Larger, spreading, i
. Contributions to the botany of Vermont. Plants -- Vermont. 50 Bulletin 73 Willows are coininonly introduced a8 shade trees because they are so easily prop:^gated by cuttings. Care should be taken, however, to select the stamen-bearing trees, both because these are more ornamental when in flower and because they do not produce the downy fruit which is often dis- agreeable when they are growing near houses. The following key, while not entirely satisfactory, may aid in recog- nizing the three tree willows. Smaller, slender, native trees, bark rough, twigs dark Black Willow Larger, spreading, introduced trees. Twigs yellow, young leaves ashy-gray or silver-white on both sides White Willow Twigs blue-green, young leaves green above, paler beneath Crack Willow BLACK WILLOW. SaUx nigra Marsh. The black willow is a slender, rather graceful tree, common everywhere, along the banks of lakes and streams. It may usually be recognized by its stouter dark brown or black twigs in contrast with the more slender, yellowish or bluish-green twigs of the European species. When the pendulous catkins open, three, five or more stamens may be found in each tiny flower. The leaves are green wlien mature and smooth except on the mid-veins and BLACK WILLOW Leaf and flowers, starainate above, pistillate below, X H- WHITE WILLOW (yellow WILLOW). Salix olhci vitelUna Koch. The white willow was introduced from Europe, but it has been so commonly planted and is so frequently spontaneous along the banks of streams and lakes, that it merits a place in this list. If one observes closely the tiny staminate flowers in May both this and the next species are clearly distinguished from the black willow since there are but two stamens in each flower, where- as the black willow has from three to six. Usually, however, *one must depend upon other and less definite characterr--. A little prac- tice, following the suggestions giv-. Please note that these images are extracted from scanned page ima
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