Oaks of the World

General dataClassificationsList of speciesLocal namesBack to
home page

 Quercus resinosa
AuthorLiebm. 1854
Synonyms macrophylla sensu Trel.1924, not Née
Local names 
Range Mexico (Aguascalientes, Durango, Guanajuato, Jalisco, Michoacan, Nayarit, San Luis Potosi, Zacatecas); 1300-2600 m;
Growth habit 6-12 m tall; trunk to 0.4 m in diameter;
Leaves 10-30 cm x 8-18, sometimes more; deciduous or semi-evergreen; thick, stiff; broadly oboval; apex rounded, broad, mucronate; base narrowly rounded or cordate; margin thickened, flat or slightly revolute, wavy, crenate or with 6-12 pairs of short, mucronate, blunt teeth; lustrous green above with scattered pubescence made of sessile, stellate, 4-8 rayed-trichomes and golden glandular ones; dense tomentum whitish yellow beneath made or short, stalkless, stellate 5-12-rayed-trichomes, and rusty glandular ones; 12-20 vein pairs, straight and parallel, flat above, raised under; epidermis smooth, or slightly bullate and papillose; petiole tomentose, short 0.2-0.6 cm); young leaves are sticky, hence the species name;
Flowers March to May; staminate catkins 7-15(-20) cm long, with more than 30 flowers; pistillate flowers 1 to 10 along tomentose catkin 2-5 cm long;
Fruits acorn ovoid 1.5-3 cm long; singly or to 5 together or more, on a tomentose peduncle 1.5-6 cm long; cup halfround 18-23 mm in diameter, with greyish tomentose scales, enclosing 1/3 to 1/2 of nut; maturing first year from October to November;

Bark, twigs and

bark thick, scaly, dark; twig thick (0.4-1 cm in diameter), angled, with tawny tomentum and yellowish lenticels; bud 3-6 mm long, ovoid, pointed, with ciliate scales; stipules reaching 1.5 cm long, linear, hairy, often persistent;
Hardiness zone, habitatnot hardy;
Miscellaneous-- A. Camus = n° 214;
-- Sub-genus Quercus, Section Quercus;
-- Closely related to Q.magnoliifolia, which differs mainly in having thinner twigs, longer petioles and a bullate epidermis;
Subspecies and