Oaks of the World

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 Quercus martinezii
AuthorC.H.Muller 1953
Synonyms 
Local namescortitucuz
RangeMexico (Jalisco, Michoacan, Guerrero, Mexico, Nayarit, Oaxaca) ; 800-2700 m ;
Growth habit6-25 m tall, trunk to 20-50 cm in diameter, or more;
Leaves

10-20 x 3-9 cm; deciduous; thick, leathery; oblanceolate, oboval or elliptic; apex acute or acuminate; base rounded, or cordate, often asymmetrical; margin cartilaginous, slightly thickened, rolled under, entire or usually with 3-6 pairs of obtuse, mucronate teeth ; greyish green, lustrous above, hairless or with pubescence ramaining along midrib; dull glaucous beneath under a pale grey tomentum made of sessile 10-12 arms trichomes and golden glandular hairs; 8-12 vein pairs, prominent below; epidermis bullate, papillose; petiole 0.6-2 cm, tomentose;

Flowers in April; male catkins 6-14 cm long, with hairy axis;  
Fruits acorn 1.5-2 cm long; pale brown; paired or 3-4 together; peduncle 2-6 cm long; cup half-round with tomentose scales enclosing 1/3 to 1/2 of nut; maturing in 1 year;

Bark, twigs and
buds

bark scaly, brown; twigs 2-5 mm thick, with a grey, persistent tomentum, during more than 1 year; yellowish white, prominent lenticels, 1mm long; buds ovoid, 2-3 mm long, pubescent; stipules persistent around terminal buds;
Hardiness zone, habitatnot quite hardy (?);
Miscellaneous -- Section Quercus; 
-- Possible confusion with Q. scyophylla, mais this one is in the Lobatae Section, hence it has aristate teeth instead of mucros.
Subspecies and
varieties
 
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