Lithocarpus glaber

Japanese stone oak is a tree species in the beech or Fagaceae family, found in Japan, China and Taiwan. Trees grow to 15 m tall.

• Leaf blade is obovate, obovate-elliptic, or oblong, 6–12 cm long and 2.5–5.5 cm broad, leathery to thickly papery, abaxially with dense scale-like glands and shortly tomentose when young, base cuneate, margin entire or with 2–4 teeth on apical part, apex abruptly acute, shortly acute, or long acuminate; secondary veins rarely over 10 on each side of midvein; tertiary veins abaxially usually not visible; petiole is 1–2 cm long, tomentose when young.
• Male inflorescences in a panicle or solitary in leaf axils, to 15 cm long; female inflorescences often with a few male flowers, cups in clusters of 3(-5); flowering is from July to November.
• Nut is ellipsoid, 1.2–2.5 cm long and 0.8–1.5 cm broad, white glaucous, apex pointed; cap is 5–10 mm long and 1–1.5 cm broad, enclosing 1/5–2/5 of the nut; ripening is in July to November of the following year.