Oaks of the World

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  Quercus miquihuanensis
Author Nixon & C.H.Muller 1993 Brittonia 45: 152
Local names
Range Mexico (Tamaulipas, Nuevo Leon) ; 2500-3050 m;
Growth habit usually 1.5 m tall, 2 m wide; can reach 3-4 m;

2-6 cm long, 1-2 wide; evergreen; thick, coriaceous, stiff; more or less broadly elliptic or oval, sometimes lanceolate; apex acute to acuminate, shortly bristle-tipped; base rounded or subcordate; margin more or less thickened, revoluted, cartilaginous, entire, often undulate; dark green, sometimes yellowish above, rough and wrinkled due to impressed secondary and tertiary veins, glabrous or with minute, scattered, stellate hairs especially near base; densely rusty woolly tomentose beneath, scratchable, tomentum made of tangled fasciculate hairs and yellow, vermiform, glandular ones; 5-10 vein pairs, curved, impressed above, prominent beneath; epiderm papillose, somewhat bullate; petiole 0.3-0.9 cm long, tomentose; 

Flowers in April-May; male inflorescence 2-3 cm long, with flowers 3-4 staminate and apiculate, hairless anthers; pistilate inflorescence 0.8-1.5 cm, with 1 to 2 pubescent flowers;
Fruits small acorn 0.8-1.2 cm long, ovoid, singly or paired on a short peduncle 4-20 mm long; cup shallow, enclosing 1/2 of the nut; maturing in 2 years in September-October; cotyledons free;

Bark, twigs and

bark dark grey, smooth; twig 1.5-4.5 mm in diameter, tawny-greyish pubescent; bud ovoid to subglobose, 2-4 mm long, glabrescent or not;
Hardiness zone, habitat probably hardy zone 7;
Miscellaneous -- Sub-genus Quercus, section Lobatae, Series Erythromexicanae;
-- Threatened (IUCN Red List Category : EN).
-- Related to Q.hypoxantha with which it forms the "Quercus hypoxantha complex", in association with Q.coahuilensis and Q.hintoniorum;

Subspecies and