Does the acorn cup cover >1/2 or <1/2 of the acorn?
Acorn cup deep, covering 1/2 or more of the acorn
Acorn cup scale tips loosed
Fall leaf color yellow to orange, never red
Black Oak (Quercus kelloggii)
Fall leaf color yellow to orange, never red
Black Oak (Quercus kelloggii)
Acorn cup shallow, usually covering less than 1/2 of the acorn
Acorn cup scale tips pressed tightly together
Fall leaf color often red or reddish brown
Fall leaf color often red or reddish brown