Quercus macrocarpa
Bur Oak

Staminate Flower Top, Stage 1

Intersection Highways #9 and #247

Note the eight stamens.  The number of stamens can vary between six and ten.

Fagaceae: Answers to key questions in Budd's Flora leading to this family. 

shrubs or trees; NOT [herbs]

male flowers, at least, in catkins

flowers with only one floral ring, with sepals but not petals

styles 3 or more; NOT [styles2]

fruit an acorn

seeds without a tuft of hairs