[Ill.u.s.tration: Habitat.]
HABITAT: (See map); best in Arkansas and Louisiana, especially in river bottoms.
[Ill.u.s.tration: Leaf.]
CHARACTERISTICS OF THE TREE: Height, 80"-100"; diameter 3", even 7"; trunk, often clean and straight for 40" or 50"; bark, conspicuous, light gray, rough with loose ashy gray, scaly ridges; leaves, obovate, regularly scalloped; acorns, edible for cattle.
APPEARANCE OF WOOD: Color, light brown, sap-wood light buff; ring-porous; rings, marked by few rather large, open ducts; grain, likely to be crooked; rays, broad, conspicuous.
PHYSICAL QUALITIES: Very heavy (5th in this list); 46 lbs. per cu.
ft.; sp. gr., 0.8039; very strong (12th in this list); elastic (33d in this list); hard (10th in this list); shrinkage, 4 per cent. or more; warps unless carefully seasoned; durable; hard and tough to work; splits easily, bad to nail.
COMMON USES: Construction, agricultural implements, wheel stock, baskets.
REMARKS: The best white oak of the south. Not distinguished from white oak in the market.
[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.]
44
BUR OAK. MOSSY-CUP OAK. OVER-CUP OAK.
_Quercus macrocarpa_ Michaux.
_Quercus_, the cla.s.sical Latin name; _macrocarpa_, refers to the large acorn.
[Ill.u.s.tration: Habitat.]
HABITAT: (See map); best in southern Indiana, Illinois and Kansas.
[Ill.u.s.tration: Leaf.]
CHARACTERISTICS OF THE TREE: Height, 70"-130", even 170"; diameter, 5"-7"; branches, high; corky wings on young branches; bark, gray brown, deeply furrowed; deep opposite sinuses on large leaves; acorns, half enclosed in mossy-fringed cup.
APPEARANCE OF WOOD: Color, rich brown, sap-wood, thin, lighter; ring-porous; rings, marked by 1 to 3 rows of small open ducts; grain, crooked; rays, broad, and conspicuous.
PHYSICAL QUALITIES: Heavy (9th in this list); 46 lbs. per cu. ft.; sp.
gr., 0.7453; very strong (16th in this list); elastic (37th in this list); hard (9th in this list); shrinkage, 4 per cent. or more; warps, ..........; hard, and tough to work; splits easily, resists nailing.
COMMON USES: Ship building, cabinet work, railway ties, cooperage.
REMARKS: Good for prairie planting. One of the most valuable woods of North America. Not distinguished from White Oak in commerce.
[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.]
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 Washington 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: Ship 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.