Quercus garryana

Douglas ex Hooker

Fl. Bor.-Amer. 2: 159. 1840.

Common names: Oregon white oak Garry oak
EndemicIllustrated
Synonyms: Quercus douglasii var. neaei (Liebmann) A. de Candolle Quercus garryana var. jacobi (R. Brown ter) Zabel Quercus jacobi Née Quercus lobata var. breweri (Engelmann) Wenzig Quercus neaei
Treatment appears in FNA Volume 3.
Revision as of 07:45, 30 July 2020 by imported>Volume Importer
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Trees or shrubs, deciduous, trees to 15 (-20) m, with solitary trunks, shrubs to 0.1-3 m, multitrunked. Bark light gray or almost white, scaly. Twigs brown, red, or yellowish, 2-4 mm diam., densely puberulent with spreading hairs or glabrate. Buds brown or yellowish, ovoid or fusiform and apex acute, 2-12 mm, glandular-puberulent or densely pubescent. Leaves: petiole 4-10 mm. Leaf-blade obovate, elliptic or subrotund, moderately to deeply lobed, 25-120 (-140) × 15-85 mm, base rounded-attenuate or cuneate, rarely subcordate, often unequal, margins with sinuses usually reaching more than 1/2 distance to midrib, lobes oblong or spatulate, obtuse, rounded or blunt, larger lobes usually with 2-3 sublobes or teeth, veins often ending in retuse teeth, secondary-veins yellowish, 4-7 on each side, the more distal veins often branching within distal lobes, apex broadly rounded; surfaces abaxially light green or waxy yellowish, often felty to touch, densely to sparsely covered with semierect or erect, simple and (2-) 4-8-rayed, fasciculate hairs 0.1-1 mm, secondary-veins raised, adaxially bright or dark green, glossy or somewhat scurfy because of sparse stellate hairs. Acorns 1-3, subsessile, rarely on peduncle to 10 (-20) mm; cup saucer-shaped, cupshaped, or hemispheric, 4-10 mm deep × 12-22 mm wide; scales yellowish or reddish-brown, often long-acute near rim of cup, moderately or scarcely tuberculate, canescent or tomentulose; nut light-brown, oblong to globose, (12-) 25-30 (-40) × (10-) 14-20 (-22) mm, apex blunt or rounded, glabrous or often persistently puberulent. Cotyledons distinct. 2n = 24.

Discussion

Varieties 3 (3 in the flora).

Quercus garryana (no varieties specified) was used medicinally by Native Americans to treat tuberculosis and as a drink and a rub for mothers before childbirth (D. E. Moerman 1986).

Selected References

None.

Key

1 Trees to 15 m or more, trunk usually solitary; buds yellowish or cream, usually fusiform, 6–12 mm, apex acute, densely pubescent; twigs persistently puberulent, with spreading hairs. Quercus garryana var. garryana
1 Shrubs or small trees usually less than 5 m, multitrunked, spreading and clonal; buds reddish brown, ovoid, 2–5 mm, sparsely glandular-puberulent; twigs sparsely puberulent or glabrate, without spreading hairs. > 2
2 Leaf blade abaxially velvety to touch, hairs usually 4–6-rayed, rays 0.25–0.5 mm. Quercus garryana var. breweri
2 Leaf blade abaxially not velvety but sometimes felty, hairs 6–8-rayed, rays less than 0.3 mm. Quercus garryana var. semota
... more about "Quercus garryana"
puberulent +, glabrous +, pubescent +  and glandular-puberulent +
rounded +, blunt +  and acute +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Kevin C. Nixon +
Douglas ex Hooker +
white;light gray +
subcordate;cuneate;rounded-attenuate +
unequal +
yellowish +  and brown +
fusiform +  and ovoid +
2-6-lobed +
pistillate +, capitate +  and spicate +
Oregon white oak +  and Garry oak +
starchy +  and fleshy +
hemispheric +, cup-shaped +  and saucer--shaped +
×12-22 +, 4mm +  and 10mm +
multibracteate +, spiny +  and scaly +
B.C. +, Calif. +, Oreg. +  and Wash. +
pistillate +  and staminate +
biennial +, annual +  and maturation +
1-seeded +  and winged +
in groups +  and enclosed +
erect +, semierect +  and spreading +
pistillate +, spicate +  and staminate +
tomentulose +  and glabrate +
12 cm120 mm <br />0.12 m <br /> (14 cm140 mm <br />0.14 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (12 cm120 mm <br />0.12 m <br />) +
subrotund +  and moderately deeply lobed +
arranged +  and alternate +
blunt +, rounded +, obtuse +, spatulate +  and oblong +
entire +, dentate +  and serrate +
toothed +  and entire +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
light-brown +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
oblong +  and globose +
1.4 cm14 mm <br />0.014 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Fl. Bor.-Amer. +
reddish-brown +  and yellowish +
connate +  and distinct +
tomentulose +  and canescent +
few-to-many +
tuberculate +
long-acute +
reduced +
anastomosing +, branching +  and unbranched +
dark green +  and yellowish +
glossy +  and bright +
Endemic +  and Illustrated +
inconspicuous +
distinct +
subulate +  and dilated +
enlarged +
yellowish +, waxy +  and light green +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Quercus douglasii var. neaei +, Quercus garryana var. jacobi +, Quercus jacobi +, Quercus lobata var. breweri +  and Quercus neaei +
Quercus garryana +
Quercus sect. Quercus +
species +
spheric +  and ovoid terete or angled +
bristle-tipped +
yellowish +, red +  and brown +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glabrate +  and puberulent +
1,500 cm15,000 mm <br />15 m <br /> (2,000 cm20,000 mm <br />20 m <br />) +
shrub +  and tree +