Quercus trojana | Davis
Acorns and leaves of the purported Quercus trojana at Shields Grove. The "frilly" acorn cup is indicative of the Cerris group heritage of this tree. The acorns produced by this specimen are roughly the size and shape of native California Valley Oak (Q. lobata) acorns. In fifteen years of observation, the tree has proven consistently productive, though some dip in productivity was noted after removal of turf watering from around the tree. The leaves have a mild "sandpaper" texture, a trait showing drought adaptation.