Sycamore. Button-wood. Buttonball-tree 
1. Winter twig, x I. 
2. Portion of twig, side view, x I. 
3. Vertical section of twig, summer 
bud and leaf petiole, enlarged. 
4. Leaf, x %. 
5. Flowering branchlet, x 4. 
6. Staminate flower, enlarged. 
+. Pistillate flower, enlarged. 
8. Fruit, x ¥%. 
g. Achene, enlarged. 
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