Part 8

Leaves 4-angled, harsh, needle-shaped =Picea, p. 13.=

Leaves flat, whitened beneath, ½-1¼ inches long, sessile, aromatic; cones 2-4 inches long with deciduous scales; bark of twigs smooth, and on old trunks with raised resin-filled blisters =Abies, p. 14.=

Leaves two-fifths to one-half inch long, short-petioled, flat and whitened beneath; cones about ¾ inch long with persistent scales; bark of twigs rough =Tsuga, p. 14.=

d.—Leaves opposite.

Leaves scale-like, decurrent on the stem, all of one kind; twigs flattened; fruit a small elongated cone with 8-12 over-lapping scales =Thuja, p. 14.=

Leaves of two kinds, either scale-like or awl-shaped, not decurrent on the stem; twigs nearly terete; fruit a bluish, berry-like strobile =Juniperus, p. 14.=

b.—Leaves flat and broad, usually deciduous.

c.—Leaves alternate or clustered.

d.—Leaves without lobes.

e.—Leaves with margins entire or slightly undulate.

f.—Leaves deciduous.

Leaves 2-5 inches long, oval; fruit an ovoid, blue berry-like drupe, borne 1-3 in a drooping cluster =Nyssa, p. 25.=

Leaves 2-5 inches long, ovate; fruit a spherical, blue berry-like drupe, borne many in an upright cyme, (Cornus alternifolia) =Cornus, p. 25.=

Leaves 4-6 inches long, oval; fruit an edible berry ¾-1¼ inches in diameter =Diospyros, p. 26.=

Leaves 4-12 inches long, obovate-lanceolate; fruit banana-like, 3-5 inches long, with many flattened seeds in the yellow flesh =Asimina, p. 20.=

Leaves 6-24 inches long, ovate-obovate; fruit a cone-like or cucumber-like cylindrical mass 2-4 inches long =Magnolia, p. 20.=

Leaves 3-5 inches long, heart-shaped; fruit a pod 2-3 inches long =Cercis, p. 23.=

Leaves 4-6 inches long, oblong-lanceolate; fruit an acorn (Quercus imbricaria) =Quercus, p. 17.=

f.—Leaves evergreen.

Leaves 3-4 inches long; fruit many dry spherical capsules in a corymb =Kalmia, p. 26.=

Leaves 4-11 inches long, evergreen; fruit an oblong, dry capsule, several in umbel-like clusters =Rhododendron, p. 26.=

e.—Leaves with margins toothed.

f.—Branches armed with stiff, sharp thorns.

Leaves 1-3 inches long, serrate or doubly serrate; fruit a small pome =Crataegus, p. 22.=

f.—Branches not armed with thorns.

g.—Base of leaf decidedly oblique. Leaf-blade broad, heart-shaped, serrate; fruit a spherical woody drupe on stalks attached to an oblong bract =Tilia, p. 25.=

Leaf-blade oval, doubly-serrate, primary veins straight; fruit an oval samara =Ulmus, p. 19.=

Leaves 2-4 inches long, serrate; fruit a small sweet purple drupe =Celtis, p. 19.=