Wide variety of oak leaf types found on my very short street. Lots of different lobe arrangement patterns and leaf serration. Aside from the post oak (2nd from left, bottem row) they do not correspond very conveniently to the pictures in the Peterson guide. I was once told by a botanist that oaks hybridize freely. I am particularlu fond of the highly serrated white oak, (2nd from from right, bottem row). The cuts go almost all the way to the center vein.