|Publication Type:||Journal Article|
|Year of Publication:||1977|
|Authors:||W. R. Overlease|
|Journal:||Journal of the Pennsylvania Academy of Science|
... The evidence indicates a continuum of character change between the two species from south to north. Data from the common gardens studies appear to support a genetic continuum from south to north. Hill Oak is considered as a northern small-fruited expression of Scarlet Oak.