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4. Staminate flower, enlarged.
5. Pistillate flower, enlarged.
6. Fruit, 1.]
+f.a.gACEAE+
+Red Oak+
_Quercus rubra L._
HABIT.--A large tree 70-80 feet high, with a trunk diameter of 2-4 feet; forming a broad, rounded crown of a few large, wide-spreading branches and slender branchlets.
LEAVES.--Alternate, simple, 5-9 inches long, 4-6 inches broad; oval to obovate; 5-11-lobed with coa.r.s.e-toothed, bristle-tipped lobes tapering from broad bases and wide, oblique, rounded sinuses; thin and firm; dull dark green above, paler beneath; petioles stout, 1-2 inches long.
FLOWERS.--April-May, when the leaves are half grown; monoecious; the staminate in hairy catkins 4-5 inches long; the pistillate on short, glabrous peduncles; calyx 4-5-lobed, greenish; corolla 0; stamens 4-5, with yellow anthers; stigmas long, spreading, bright green.
FRUIT.--Autumn of second season; sessile or short-stalked acorns; cup shallow, saucer-shaped, inclosing only the base of the nut; scales closely appressed, more or less glossy, p.u.b.erulous, bright red-brown; nut oblong-ovoid with a broad base, about 1 inch long, red-brown; kernel white, very bitter.
WINTER-BUDS.--Terminal bud 1/4 inch long, ovoid, acute, light brown, smooth.
BARK.--Twigs l.u.s.trous, green, becoming reddish, finally dark brown; young trunks smooth, gray-brown; old trunks darker, shallowly fissured into thin, firm, broad ridges; inner bark light red, not bitter.
WOOD.--Heavy, hard, strong, coa.r.s.e-grained, light red-brown, with thin, darker colored sapwood.
DISTRIBUTION.--Southern portion of Lower Peninsula as far north as Roscommon County.
HABITAT.--Prefers rich, moist loam; glacial drift; stream-banks. Grows well in all well-drained soils.
NOTES.--Grows rapidly. A good street tree.
[Ill.u.s.tration: +Pin Oak+
1. Winter twig, 3.
2. Leaf, 1/2.
3. Flowering branchlet, 1/2.
4. Staminate flower, enlarged.
5. Pistillate flower, enlarged.
6. Fruit, 1.]
+f.a.gACEAE+
+Pin Oak+
_Quercus pal.u.s.tris Muench._
HABIT.--A medium-sized tree 40-50 feet high, with a trunk diameter of 1-2 feet; forming an oblong or pyramidal crown of many upright, spreading branches, the lowermost drooping nearly to the ground.
LEAVES.--Alternate, simple, 4-6 inches long, 2-4 inches broad; obovate to ovate; 5-7-lobed by deep, wide, rounded sinuses, the lobes few-toothed, bristle-tipped; thin and firm; very l.u.s.trous, dark green above, paler beneath; petioles slender.
FLOWERS.--May, with the leaves; monoecious; the staminate in hairy catkins 2-4 inches long; the pistillate tomentose, borne on short, tomentose peduncles; calyx 4-5-lobed, hairy; corolla 0; stamens 4-5, with yellow anthers; stigmas recurved, bright red.
FRUIT.--Autumn of second season; sessile or short-stalked acorns; cup saucer-shaped with scales closely appressed, dark red-brown, inclosing only the base of the nut; nut nearly hemi-spherical, about 1/2 inch in diameter, light brown; kernel bitter.
WINTER-BUDS.--Terminal bud 1/8 inch long, ovoid or conical, acute, light brown, smooth.
BARK.--Twigs dark red and tomentose at first, becoming l.u.s.trous, green, finally gray-brown; thick, gray-brown and smoothish on the trunk.
WOOD.--Heavy, hard, strong, coa.r.s.e-grained, light brown, with thin, darker colored sapwood.
DISTRIBUTION.--Confined to the most southern portions of the Lower Peninsula.
HABITAT.--Prefers moist, rich soil; river-bottoms; borders of swamps.
NOTES.--Grows rapidly and uniformly. Easily transplanted. The tiny branchlets at a distance give the impression of the tree being full of pins.
[Ill.u.s.tration: +Scarlet Oak+
1. Winter twig, 1.
2. Portion of twig, enlarged.
3. Leaf, 1/2.
4. Flowering branchlet, 1/2.
5. Staminate flower, enlarged.
6. Pistillate flower, enlarged.
7. Fruit, 1.]
+f.a.gACEAE+
+Scarlet Oak+
_Quercus coccinea Muench._
HABIT.--A tree 40-50 feet high and 12-15 inches in trunk diameter; long, slender branches form a rather open, rounded crown.
LEAVES.--Alternate, simple, 3-6 inches long and nearly as broad; broadly obovate to oval; 5-9-lobed by deep, wide, rounded sinuses, the lobes toothed and bristle-tipped; thin and firm; s.h.i.+ning, bright green above, paler beneath, both sides glabrous; turning brilliant scarlet in autumn; petioles slender, 1-2 inches long.
FLOWERS.--May, with the leaves; monoecious; the staminate in glabrous catkins 3-4 inches long; the pistillate on p.u.b.escent peduncles 1/2 inch long, bright red, p.u.b.escent; calyx 4-5-lobed, reddish, p.u.b.escent; corolla 0; stamens usually 4, with yellow anthers; stigmas long, spreading, bright red.
FRUIT.--Autumn of second season; sessile or short-stalked acorns; cup top-shaped to cup-shaped, with closely imbricated, slightly p.u.b.erulous, red-brown scales, inclosing about one-half of the nut; nut usually short-ovoid, 1/2-3/4 inch long, light red-brown; kernel whitish, bitter.
WINTER-BUDS.--Terminal bud about 1/4 inch long, broadly ovoid, acute, dark red-brown, pale-p.u.b.escent above the middle.
BARK.--Twigs at first scurfy-p.u.b.escent, later l.u.s.trous, green, finally smooth, light brown; thick, dark gray or brown on old trunks, shallowly fissured, scaly; inner bark red, not bitter.
