290 TREES OF MINNESOTA. 
Plate 32. Quercus alba. White Oak. 
1. Flowering branch, one-half natural size. 2. Portion of a staminate 
eatkin, enlarged. 3. Staminate flower, enlarged. 4. Cluster of pistillate 
flowers, enlarged. 5. Cross section of ovary, enlarged. 6. Fruiting branch, 
one-half natural size, 7. Cup, one-half natural size. 8. Longitudinal sec- 
tion of acorn, one-half natural size. 9. A germinated acorn, one-half natur- 
al size. 
