The leaves of this species often have numerous small black dots on the adaxial surface. These are ascocarps (the sexual fruiting bodies of ascomycete fungi) of the genus Asterina (D. M. Hunt, pers. comm).
Although no hybrids have been formally described, evidence of hybridization of Quercus inopina with Q . hemisphaerica , Q . laevis , and Q . myrtifolia has been reported (D. M. Hunt 1989).