Oaks of the World

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 Quercus pringlei
AuthorSeemen ex Loes. 1900
Synonyms filiformis C.H.Mull. 1936
Local names 
Range Mexico (Nuevo Leon, Queretaro, Coahuila, Hidalgo, Tamaulipas, Zacatecas) ; 1500-2800 m;
Growth habit usually less than 2 m tall, but reaches 5 m;
Leaves 1-3(-4) cm long, 0.5-2.5 wide; evergreen; semi-leathery; lanceolate to elliptic or oblong-lanceolate; apex mucronate, obtuse or pointed; base rounded to cordate; margin thick, flat, cartilaginous, entire or seldom with 1-3 pairs of small, mucronate teeth in apical 2/3; yellowish green, glabrescente above, with stalkless, stellate trichomes and less often dark glandular ones; beneath with stellate pubescence at first, along with long, simple glandular hairs, then glabrous and often whitish green; 6-9 straight vein pairs nearly plane both sides, not evident; epidermis papillose ; petiole 2-5 mm long, with short pubescence;
Flowers in April; male catkins 1-2 cm long, with numerous flowers ; female catkins pubescent, 2-4 mm long, with 1-3 flowers;
Fruits acorn globose 1 cm; singly or to 3 on a very short peduncle less than 10 mm long; cup half-round, 9-12 mm in diameter, enclosing 1/3 or 1/2 of nut, with pubescent scales; maturing in 1 year in September;

Bark, twigs and

bark thin, fissured; twig slender (1-2 mm in diameter), with dense, glabrescent tomentum made of stalkless, stellate hairs, simple hairs and dark glandular ones; bud 1-2 mm, almost globose, reddish; stipules hairless, 4 mm long, deciduous;  

Hardiness zone, habitat hardy zone 7;
Miscellaneous -- A. Camus : n° 177;
-- section Quercus ; sub-section Opacae;
-- related to
Q.grisea ;
-- resembles sometimes Q. depressipes, but the leaves of this species are dull, glaucous, oblong-oboval to nearly orbicular, and the peduncles are longer (1.5-3.5 cm);
Subspecies and
-- fo. dentata C.H.Muller 1936
margin dentate except in lower 1/3, teeth with recurved mucro; leaves abaxially yellowish stellate tomentose at first, becoming glabrous;