Coefficient of Conservatism:
Coefficient of Wetness:
A. A. Reznicek
Swamps and upland forests, but like many upland tree species in southern Michigan persisting largely along roadsides and edges of cleared fields.
The name is derived from use of the wood by early settlers to make shingles. The majority of shingle oaks retain their dried and brown leaves in the winter, a tendency much less commonly observed in other oaks, except Hill’s Oak. This is a very distinctive species in our area (there are other entire-leaved species elsewhere); the bristle at the tip of the leaf reveals affinity with the black oak subgenus. Leaves with small lobes or bristles on the margin represent hybrids, for this oak hybridizes with several other species, including at least three in Michigan: Q. rubra [producing Q. ×runcinata (A. DC.) Engelm.], collected several times in Washtenaw Co.; Q. velutina [producing Q. ×leana Nutt.], also collected several times in Washtenaw Co.; and Q. ellipsoidalis, collected in Jackson and Washtenaw Cos.