Being the sort of geeky person that I am, as soon as we moved here, I “Googled” Blackjack Oak to see if there actually was a tree by that name, and as you probably already know, there certainly is.
I was sort of curious about how it came by its name, and according to at least two web sites, the leaves on the tree are said to somewhat resemble a blackjack, which is a short, leather-wrapped bludgeon. Yikes! I’d rather think of a card game when I hear the name, which is what I suspect most people do. When we first moved here, I called to order something or other on the phone, and the guy taking my order blurted out, “Are you in Vegas?” when I gave him the street name. I had to laugh.
I’m not a tree expert, so I’m not really sure if we actually do have any Blackjack Oak trees on the circle or the cul-de-sacs. Do you know? Here are a few pictures that would help in identification. Source: http://www.cas.vanderbilt.edu/bioimages/species/quma3.htm