Allozyme variation at seven putative polymorphic gene loci (Fle, Idh, Mdh-2, Mdh-3, 6 Pgd-2, Pgi-2, Pgm) was quantified in an isolated Quercus macrocarpa population in northwestern Ontario, Canada.

Editor's note: Once a month, the OSU Extension master gardener's office of Franklin County profiles a plant that occurs naturally in central Ohio. Native plant landscapes are increasingly promoted to ...

The bur oak (Quercus macrocarpa) is a noble native tree. This oak has large (5- to 9-inch-long), dark-green leaves. The base fiddle-shaped leaves have deep, rounded sinuses. The acorns are most ...

This study of bur oak (Quercus macrocarpa) in east-central Illinois examines some ecological consequences of the variation in seed number per acorn. The frequency of double-seeded acorns ranges from 0 ...

The classic and trusted book “Fifty Common Trees of Indiana” by T.E. Shaw was published in 1956 as a user-friendly guide to local species. Nearly 70 years later, the publication has been updated ...