Oaks of the World

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 Quercus hirtifolia
AuthorM.L.Vasquez-Villagran, S. Valencia-A. & K.C.Nixon 2004
Synonyms 
Local names 
Range Mexico : southern part of the Sierra Madre Oriental (Hidalgo,Puebla), 1600 to 2400 m;
Growth habit Tree to 4-15 m, or shrub to 3-5 m;
Leaves

2,8-12 x 1,6-7 cm, oboval to elliptic, subcoriaceous; apex aristate, pointed or apiculate, occasionally rounded; base cordate, sometimes rounded to oblique; margin sinuate, with 1-6(-10) aristate teeth near apex and sometimes near base; young leaves with some stellate trichomes adaxially; mature leaves slightly pubescent above, with some non glandular trichomes along midvein; persistent pubescence underneath with fascicled and stellate hairs (the 8-12 rays spreading away from the axis of the trichoma), and scarce reddish brown glandular trichomes; the indumentum persistent or falling into plates by aging; abaxial epiderm usually smooth, somtimes bullate; 6-12 pairs of secondary veins, raised under; petiole 2.5-8 cm long, at first densely pubescent, becoming glabrescent with sessile non glandular fascicled hairs;

Flowers male catkins 2-8 mm long, with pubescent rachis; female flowers 1-3 together, with densely pubescent cupular scales, styles 1 mm long, and broadly spatulate stigmas;
Fruits acorn 0.7-1.9 cm long x 0.4-1.3 cm in diameter, on the tip of a thin peduncle to 2.5 cm long; cup halfround with ovate, slightly pubescent scales, ciliate at margin; ripening first year from August to September;

Bark, twigs and
buds

young twig 1.5-3.5 mm thick, pubescent, becoming glabrescent second year; terminal bud ovoid, 2-6 mm long x 1-2.5 mm in diameter, with ovate scales ciliate at margin; stipules deciduous;
Hardiness zone, habitat hardiness zone : 8;
MiscellaneousSection Lobatae;
Closely related to
Q.hintoniorum;
Subspecies and
varieties
 
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