Oaks of the World

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 Quercus xalapensis
AuthorHumb. & Bonpl. 1809
Synonyms huitamalcana Trel. 1922 (A.Camus : n° 401)
paxtalensis C.H. Muller 1942
runcinatifolia f. alata Trel. & Mull. 1936
sartorii Liebm. 1854
sierramadrensis C.H. Muller 1942
xalapensis var. longifolia (A.DC) Wenz. 1884
vexans Trel. 1924
Local names capulincillo; hojeador; carrasco manzanero;  
Range Mexico and Central America (from the center of Veracruz State to Nicaragua); 1100-2400 m ;
Growth habit 5-25 m tall; trunk to 45-150 cm in diameter;
Leaves 7-19 x 2-7 cm; deciduous; semi-leathery; more or less broadly oval; apex attenuate or acuminate, aristate; base acute, obtuse, rounded or cordate, sometimes asymmetrical; margin flat, cartilaginous, dentate (7-12 pairs of 0.5-2 mm long teeth with long bristle-tips); adaxially green, lustrous, hairless or with some short, stellate, stalked trichomes near base of the midvein; abaxially light green, hairless or with axil tufts of large stalked stellate hairs, and short stellate hairs scattered on the blade and the veins, without golden glandular hairs; 8-12 vein pairs, orangish, strongly raised abaxially, convex or flat above (seldom impressed); epidermis papillose; petiole 0.8-4 cm long, glabrescent;
Flowers from February to April; male inflorescences 4-9 cm long, with at least 30 flowers; pistillate inflorescences very short, bearing 1-3 flowers;
Fruits acorn 1-2.3 cm long, 1.1-1.6 wide; ovoid to globose; glabrescent, mucronate; singly or to 3 on a 0.2-1 cm long peduncle; cup half-round or turbinate, 0.6-2 cm wide, with appressed scales, enclosing 1/3 to 1/2 of nut; pericarp pubescent inside; maturing in 2 years from September to November;

Bark, twigs and

bark rough, dark grey, thick; twigs 1-3 mm in diameter, hairless, or slightly pubescent first year, dark red brown turning grey, with white raised lenticels; buds ovoid pointed, 2-4 mm long, with ciliate margin scales; stipules pubescent, deciduous;
Hardiness zone, habitatnot quite hardy (zone 7-8);

-- A. Camus : n 395;
-- Section Lobatae; sub-section Acutifoliae;
-- For Silvia Romero Rangel, in her revision of the sub-section Acutifoliae, in 2006, the taxonomy of this group is strongly modified : see her classification.

Subspecies and