Oaks of the World

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  Quercus huicholensis
Author R.A. MacCauley 2020
Synonyms
Local names
Range Mexico (Sierra Madre Occidental, from North of Jalisco to South Durango); 1650-2820 m;
Growth habit 1-13 m; trunk 10 to 45 cm in diametre;
Leaves 7-17 cm long, 4.5-15 cm wide, obova to suborbicular; apex obtuse; base cordate; margin subentire or irregularly toothed, with 0-14 bristle-tips mostly in apical half of the blade; 7-10 pairs of lateral veins, anastomosing near the margin; adaxially glabrous except on the midrib and the axils; abaxially densely tannish-gray to light gray-brown tomentose, with stipitate fascicled trichomes, hiding the papillose-bullate epidermis; petiole 0.4-2 cm long, tomentose;
Flowers male catkins pendulous, tomentose; pistillate catkins spreading to erect or somewhat pendulous, 0,5-4 cm long with 1-8 acorns
Fruits acorn 7-11 mm long, 6-8 mm wide, ovoid, 1/3 to 1/2 included in a 7-9 mm wide cup;

Bark, twigs and
buds

bark gray-black, at firs smooth, becoming deeply fissured, corky; twig tawny tomentose at first, then glabrous and brownish-black
Hardiness zone, habitat rocky slopes, canyon sides;
Miscellaneous -- Sub-genus Quercus, Section Lobatae, Series Erythtomexicanae, Group Racemiflorae;
-- Species very similar to Q. conzattii (which was placed as a synonymous in the past), but the latter differs mainly in having pale gray (as opposed to golden brown to pale grayish brown) abaxial leaf pubescence, and having on average longer infructescences (1-6 cm long);

Subspecies and
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