DCO?

[HB_Hunter]

There are four trees planted around my office that I'm almost certain are DCOs. I'd like some help confirming before I send acorns to people claiming they are . The trees are mature and roughly 20 feet tall.

Thanks in advance.

 

[Charleston Treeman]

http://plants.usda.gov/core/profile?symbol=QUPR
https://www.extension.iastate.edu/forestry/iowa_trees/trees/dwarf_chinkapin_oak.html
Be easier to tell once acorns have fully matured, but foliage and bark looks right.

 

[HB_Hunter]

Acorns are looking pretty mature.

 

[HB_Hunter]

With the girth of the trunk and its height I can't imagine it isn't. The leaves are a match as well.

 

[letemgrow]

Try English oak and see if that matches.

 

[shedder]

I am thinking a swamp white x English cross. A fairly common tree in urban settings. The stalks on the acorns are a clue.

 

[Nebraskaz71]

Looks like a big regal prince oak