Tree horizon spreading

[Edwin]

I like to know what type of tree that has black leaves all over ,it's biological name,located in San Francisco near 16 th Ave and morega st,if you can direct me to a book, encyclopedia that identify it
Would be helpful my email (e-mail address removed) thk

 

[Chuck]

There are numerous trees with very dark leaves. If you know where the tree is located post a picture.

 

[oneeye]

Valley oak

 

[oneeye]

I like to know what type of tree that has black leaves all over ,it's biological name,located in San Francisco near 16 th Ave and morega st,if you can direct me to a book, encyclopedia that identify it
Would be helpful my email (e-mail address removed) thk

Valley oak