This shows the acorn of Bear Oak, Quercus ilicifolia, (Keeler, 1915).
This shows the acorn of Black Jack Oak, Quercus marilandica, (Keeler, 1915).
This shows the acorn of Bur Oak, Quercus macrocarpa, (Keeler, 1915).
This shows the acorn of chestnut Oak, Quercus prinus, (Keeler, 1915).
This shows the acorn of Chinquapin Oak, Quercus prinoides, (Keeler, 1915).
This shows the acorn of Pin Oak, Quercus palustris, (Keeler, 1915).
This shows the acorn of Post Oak, Quercus minor, (Keeler, 1915).
This shows the acorn of Red Oak, Quercus rubra, (Keeler, 1915).
This shows the acorn of Scarlet Oak, Quercus coccinea, (Keeler, 1915).
This shows the acorn of Shingle Oak, Quercus imbricaria, (Keeler, 1915).
This shows acorns of Spanish Oak, Quercus digitata, (Keeler, 1915).
This shows the acorn of Swamp White Oak, Quercus platanoides, (Keeler, 1915).
This shows the acorn of Willow Oak, Quercus phellos, (Keeler, 1915).
This shows the acorn of Yellow Oak, Quercus acuminata, (Keeler, 1915).
This shows a sprouting acorn (Keeler, 1915).
This shows the staminate flower of Scarlet Oak, Quercus coccinea, (Keeler, 1915).
