Trees of the Northern United States: Their Study, Description and DeterminationApgar, A. C. (Austin Craig)
Science
Trees of the Northern United States: Their Study, Description and Determination
Apgar, A. C. (Austin Craig)
Trees -- North America
Leaves large, alternate, deciduous, odd-pinnate. Flowers with separate
petals, fragrant, white, in large clusters. Fruit 5-celled dehiscent
pods, with many pendulous, winged seeds.
[Illustration: C. Sinénsis.]
=Cedréla Sinénsis.= (CHINESE CEDRELA.) Leaves large, odd-pinnate,
alternate, appearing much like those of the Ailanthus, but with slight
serrations near the tips of the leaflets, and no glands near the base.
Bruised leaves with a strong odor; footstalk and stout-tipped branches
with glands. Large tree, seemingly hardy in New Jersey, but dies to the
ground in winter in Massachusetts. Recently introduced from China.
ORDER =XI. SIMARUBÀCEÆ.= (QUASSIA FAMILY.)
Eastern trees and shrubs, here represented by a single tree:
GENUS =17. AILÁNTHUS.=
Large trees to shrubs, with alternate, odd-pinnate leaves. Flowers
small, greenish, in large terminal panicles. Fruit broadly winged, like
the Ash, but with the seed in the center.
[Illustration: A. glandulòsus.]
=Ailánthus glandulòsus=, Desf. (TREE OF HEAVEN.) Leaves very large, 2 to
5 ft. long on the younger growths; leaflets obliquely lanceolate,
coarsely toothed at the base, with a gland on the lower side at the
point of each tooth; point of leaflets entire. Young twigs thick, rusty
brown; buds very small in the axils. Only some of the trees have fruit,
as some have only staminate flowers. The staminate flowers are very
ill-scented. A rapid-growing tree, with useful hard wood; cultivated and
naturalized; hardy throughout. See page 10.
ORDER =XII. ILICÌNEÆ.= (HOLLY FAMILY.)
A small order of trees and shrubs, including for our purpose only one
genus:
GENUS =18. ÌLEX.=
Trees or shrubs with simple, alternate, thick, mostly evergreen leaves.
Flowers rather inconspicuous, mostly in clusters. Fruit berry-like,
small (¼ to ½ in.), with 4 to 6 nutlets; hanging on the plants late in
the autumn or through the winter.
* Leaves evergreen. (=A.=)
=A.= Leaves with spiny teeth 1.
=A.= No spiny teeth 2.
* Leaves deciduous 3.
[Illustration: I. opàca.]
1. =Ìlex opàca=, Ait. (AMERICAN HOLLY.) Leaves evergreen, oval, acute,
thick, smooth, with scattered spiny teeth. Flowers white; May. The
bright-red berries, found only on some of the trees, remain on through
the greater part of the winter. Small tree, 15 to 40 ft. high, with very
hard white wood; wild in southern New England and southward. A beautiful
broad-leaved, evergreen tree which should be more extensively
cultivated. North of latitude 41° it needs a protected situation.
[Illustration: I. Dahòon.]
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