Oaks of the World

General dataClassificationsList of speciesLocal namesBack to
home page

 Quercus miquihuanensis
AuthorNixon & C.H.Muller 1993
Synonyms 
Local names 
Range Mexico (Tamaulipas, Nuevo Leon) ; 2500-2950 m;
Growth habit usually 1.5 m tall, 2 m wide; can reach 3-4 m;
Leaves 3-5 cm long, 1-3 wide; evergreen; more or less broadly elliptic or oval, sometimes oboval; apex acute to acuminate, shortly bristle-tipped; base rounded or slihtly cordate; margin more or less thickened, revoluted, cartilaginous, entire, often undulate, seldom 1-2 small teeth near apex; dark green, sometimes yellowish above, rough and wrinkled due to impressed secondary and tertiary veins, glabrous or with minute, scattered, stellate hairs; densely rusty woolly tomentose beneath, scratchable, tomentum made of tangled stellate hairs and yellow, vermiform, glandular ones; 5-8 vein pairs, curved, prominent beneath; epiderm somewhat bullate; petiole 0.3-0.9 cm long, tomentose; 
Flowers male inflorescence 2-3 cm long; pistilate inflorescence 0.8-1.5 cm, with 1 to 2 pubescent flowers;
Fruits small acorn 1.3-1.5 cm long, ovoid, singly or paired on a short peduncle 4-10 mm long; cup shallow, enclosing 1/2 of the nut; maturing in 2 years; cotyledons free;

Bark, twigs and
buds

bark dark grey, smooth; twig 1.5-2 mm in diameter, tawny-greyish pubescent; bud 2-4 mm long, glabrescent or not;
Hardiness zone, habitatprobably hardy zone 7;
Miscellaneous-- Section Lobatae;
-- Related to Q.hypoxantha with which it forms the "Quercus hypoxantha complex", in association with Q.coahuilensis and Q.hintoniorum;
Subspecies and
varieties
 
Pictures