Oaks of the World

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 Quercus mohriana
Author Buckl. 1901 Bull. New York Bot. Gard. 2: 219
Local namesMohr's shin oak ;
RangeW Oklahoma, Texas, New Mexico; North of Mexico; to 2500 m;
Growth habit

to 3 m tall, sometimes more; often rhizomatous, bushy, very low; thicket forming;

Leaves 2.5-7.5 x 1.2-3.5 cm ; sometimes evergreen; leathery; oblong to elliptic; leathery; apex and base rounded (sometimes apex acute, sometimes base cordate); margin entire or denticulate, often undulate; dark lustrous grey green above, with small, sparce, multiradiate hairs; pale dull grey, densely tomentose beneath; midrib prominent abaxially; 8-9 vein pairs slightly raised beneath; petiole pubescent, 2-5 mm long;
Flowers male inflorescence slightly hairy, 2-3 cm long; female inflorescence 0.2-0.8 cm long, bearing 1-3 flowers;
Fruits acorn 1-1.5 cm long; singly or 2-3 together on tomentose, short peduncle (to 1 cm); enclosed 1/2 or more by the deep cup; cup scales triangular to rhomboid; maturing in 1 year; cotyledons connate;

Bark, twigs and

bark grey, thin, sulcate; twigs 1-2 mm in diameter, pubescent, greyish; buds dark brown, ovoid or rounded, hairless, 2 mm long; stipules deciduous, pubescent, 3 mm long;
Hardiness zone, habitat hardy in zone 7; prefers calcareous soils;
Miscellaneous-- A. Camus : n° 187 ;
-- Sub-genus Quercus, Section Quercus ;
-- hybridizes with Q.gambelii, grisea, havardii, stellata; these hybrids have not been named;
Subspecies and