Quercus rysophylla

The loquat leaf oak is in the red oak group (Lobatae) of the beech or Fagaceae family, and is native to the Sierra Madre Oriental Mountain Range in the states of Tamaulipas, Nuevo León, San Luis Potosí, Veracruz, and Hidalgo in northeastern Mexico. It can reach about 25 m in height.

• Leaves are alternate, simple, up to 8–18 cm long and 3–7 cm wide, thick, leathery, very rough; shape is elliptic to lanceolate, apex pointed, bristle-tipped, often shortly acuminate; base is subcordate; margins are entire (no teeth), or with 2-4 pairs of bristle-tipped teeth in the apical half, sometimes on one side only.
• Acorn is ovoid, pointed, 1.5–2 cm long, single, paired, or more on a stout, short peduncle 2 mm long; the cup encloses 1/3 to 1/2 of the nut; nut matures in 2 years, in July-August.
• Bark is smooth, pale grey, aging and becoming rough, deeply cracked over time.