Quercus rysophylla Weath. 1910
Synonyms	sierramadrensis C.H.Muller 1942
Local names	Loquat leaf oak ;
Range	Mexico (Nuevo Leon, Tamaulipas, San Luis Potosi) ; 600-1900 m;
Growth habit	tall tree reaching 25 m;
Leaves	6-22 cm sur 2-7; evergreen; elliptical to oboval-lanceolate; thick, leathery, very rough; apex pointed; base subcordate; margin wavy, toothed in the apical half (2-4 pairs of teeth); glabrous, shiny green above; hairless beneath, except some axillary tufts; 15-20 pairs of secondary veins raised beneath, impressed above; tertiary veins conspicuous on both sides; short petiole (0.5 cm);
Flowers
Fruit	acorn ovoid, pointed, 1-1.5 cm long; singly or paired, or more on a stout peduncle; cup enclosing 1/3 to 1/2 of the nut; maturing in 2 years;
Bark, twigs and buds	dark grey bark, deeply furrowed; twig sulcate, hairless, with small light lenticels; bud 6 mm long, with stipules;
Hardiness zone, habitat	hardy (withstands - 17°C); fast growing; prefers lime-free soils and full sun;
Miscellaneous	-- A. Camus : n° 318; -- Section Lobatae ; -- Also written "rhysophylla"; -- For Susana Valencia-Avalos, 2004, Q. sierramadrensis is a synonym of Q. saltillensis;
Subspecies and varieties
Pictures