Oaks of the World

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 Quercus incana
AuthorW.Bartram 1791
Synonymsbrevifolia Sarg. 1895, nom. illeg.
cinerea Michx. 1903
phellos var. brevifolia Lam. 1785
verrucosa Raf. 1838
Local namesbluejack oak ; sandjack oak ;
RangeSE USA (Louisiana, Texas) ; to 250m;
Growth habit6 m tall; sometimes in dense thickets; trunk narrow (nearly 12-25 cm in diameter);
Leaves 5-10 x 1.2-2.5 cm; narrowly oboval to elliptic; leathery, thick; apex rounded with short tooth; base rounded or attenuate; entire; shiny blue green above; grey green tomentose beneath; leaves on young twigs or on suckers often have toothed margin; petiole tomentose 2-8 cm long;
Flowers 
Fruitsacorn globose 1.5 cm in diameter; striate; sessile; brown; apex hairy; cup deep, enclosing 1/3 to 1/2 of nut, with pale tomentose scales; maturing in 2 years;

Bark, twigs and
buds

bark blackish, rough, strongly furrowed, broken into square plates; twig brown tomentose; bud conical, brown, with hairy scales;
Hardiness zone, habitatnot quite hardy (withstands -15°C); prefers dry, sandy soils; slow-growing;
Miscellaneous-- A.Camus : n° 412;
-- section Lobatae ;
-- hybrids with :
Q.falcata
(=
Q.x subintegra),
Q.laurifolia
(=
Q.x atlantica),
Q.laevis (=
Q.x asheana),
Q.marilandica
(=
Q.x cravenensis),
Q.nigra
(=
Q.x caduca),
Q.velutina
(=
Q.x podophylla) ;
Subspecies and
varieties
 
Pictures