Mozark ... I'd like to see a mature acorn - including the cap and a full picture of the tree ... plus the trunk. Some research at Morton Arborertum in Lisle, IL (the arboretum I will include next in our search for hybrid/non-hybrid oak trees) suggest chinkapin oak trees may not hybridize more readily than some of the other white oak species; however, DCOs hybridize more readily. Of course, DCOs are already a hybrid oak. I would encourage you - and others - to review the research at Morton Arboretum even though it is a long slog with lots of technical terms that I - and others - may not be familiar with unless they are really into dendrology. Skim the heavy technical stuff and read what trees they studied and what conclusions they reached. The study .... https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6010771/
Section 2.7 / Table 3 and Sections 4/5 ... discussion and concluding remarks may be of greatest interest.
Section 2.7 / Table 3 and Sections 4/5 ... discussion and concluding remarks may be of greatest interest.
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