Main morphological differences between Q. ilex and Q. rotundifolia

 

Q. ilex
Q. rotundifolia
Leaves
ovate or lanceolate, with acute apex orbicular or nearly so, with obtuse apex
Midrib
straight sinuous, mainly near apex
Secondary veins
7 to 12 pairs 4 to 8 pairs
Stellate trichomes abaxially
with 12-14 rays 185-200 µ long with 9-10 rays 135-150 µ long