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Compare sources for Quercus incana

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Field
Oaks of the World
The Sibley Guide to Trees
Common Names
bluejack oak, sandjack oak
Bluejack Oak, Cinnamon Oak, Sandjack, Shin Oak, Turkey Oak, Upland Willow Oak
Geographic Range

SE USA (Louisiana, Texas) ; to 250m;

Growth Habit

6 m tall; sometimes in dense thickets; trunk narrow (nearly 12-25 cm in diameter);

Tardily deciduous. shrub or small tree usually under 25’, often forming thickets

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;

  • 3”
  • leathery
  • bluish or ashy green above
  • petiole very short
  • margins flat not rolled under
  • occasional sprout leaves w/ 2-3 lobes
  • underleaf whitish
Fruits (Acorns)

acorn 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;

  • 3/4”
  • cup shallow
Twigs

often hairy

Hardiness & Habitat

not quite hardy (withstands -15°C); prefers dry, sandy soils; slow-growing;

  • common in well-drained sandy soils, dunes, and ridges associated with laevis and margaretiae
  • not cultivated
Additional Information

– A.Camus : n° 412; – Sub-genus Quercus, section Lobatae, subsection Phellos; – 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 ) ;