Part 23 (2/2)

[Ill.u.s.tration: Cross-section, magnified 37-1/2 diameters.]

[Ill.u.s.tration: Tangential Section, life size.]

45

WHITE OAK (Western).

_Quercus garryana_ Douglas.

_Quercus_, the cla.s.sical Latin name; _garryana_, named for Garry.

[Ill.u.s.tration: Habitat.]

HABITAT: (See map); best in western Was.h.i.+ngton and Oregon.

[Ill.u.s.tration: Leaf.]

CHARACTERISTICS OF THE TREE: Height, 60'-70', even 100'; diameter, 2'-3'; branches, spreading; bark, light brown, shallow fissures, broad ridges; leaves, coa.r.s.ely pinnatified, lobed; fruit, large acorns.

APPEARANCE OF WOOD: Color, light brown, sap-wood whitish; ring-porous; rings, marked by 1 to 3 rows of open ducts; grain, close, crooked; rays, varying greatly in width, often conspicuous.

PHYSICAL QUALITIES: Heavy (10th in this list); 46 lbs. per cu. ft.; sp. gr., 0.7449; strong (28th in this list); elasticity medium (54th in this list); hard (8th in this list); shrinkage, 5 or 6 per cent.; warps, unless carefully seasoned; durable; hard to work, very tough; splits badly in nailing.

COMMON USES: s.h.i.+p building, vehicles, furniture, interior finish.

REMARKS: Best of Pacific oaks. Shrubby at high elevations.

[Ill.u.s.tration: Radial Section, life size.]

[Ill.u.s.tration: Cross-section, magnified 37-1/2 diameters.]

[Ill.u.s.tration: Tangential Section, life size.]

46

POST OAK.

_Quercus stellata_ w.a.n.genheim. _Quercus minor_ (Marsh) Sargent.

_Quercus obtusiloba_ Michaux.

_Quercus_, the cla.s.sical Latin name; _stellata_, refers to the stellate hairs on upper side of leaf; _minor_, refers to size of tree, which is often shrubby; _obtusiloba_, refers to the blunt lobes of leaves.

[Ill.u.s.tration: Habitat.]

HABITAT: (See map); best in Mississippi basin.

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