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The Norway Spruce (picea Excelsa)




Distinguishing characters: The characteristic appearance of the

full-grown tree is due to the *drooping branchlets* carried on *main

branches which bend upward* (Fig. 7).



Leaf: The leaves are dark green in color and are _arranged spirally_,

thus making the twigs coarser to the touch than the twigs of the

hemlock or fir. In cross-section, the individual leaflet is

quadrilateral, while that of the pine is triangular.



Form and size: A large tree with a straight, undivided trunk and a

well-shaped, conical crown (Fig. 7).



Range: Northern Europe, Asia, northern North America.



Soil and location: Grows in cool, moist situations.



Enemies: The foliage of the spruce is sometimes affected by _red

spider_, but is apt to be more seriously injured by drought, wind,

and late frosts.



Value for planting: Commonly planted as an ornamental tree and for

hedges. It does well for this purpose in a cool northern climate,

but in the vicinity of New York City and further south it does not

do as well, losing its lower branches at an early age, and becoming

generally scraggly in appearance.






Commercial value: The wood is light and soft and is used for

construction timber, paper pulp, and fuel.



Other characters: The _fruit_ is a large slender cone, four to seven

inches long.



Comparisons: The _white spruce_ (_Picea canadensis_) may be told from

the Norway spruce by the whitish color on the under side of its

leaves and the unpleasant, pungent odor emitted from the needles

when bruised. The cones of the white spruce, about two inches long,

are shorter than these of the Norway spruce, but are longer than

those of the black spruce.



It is essentially a northern tree growing in all sorts of locations

along the streams and on rocky mountain slopes as far north as the

Arctic Sea and Alaska. It often appears as an ornamental tree as far

south as New York and Pennsylvania.



The _black spruce_ (_Picea mariana_) may be told from the other

spruces by its small cone, which is usually only about one inch in

length. In New England it seldom grows to as large a size as the

other spruce trees.



It covers large areas in various parts of northern North America and

grows to its largest size in Manitoba. The black spruce has little

value as an ornamental tree.



The _Colorado blue spruce_ (_Picea parryana_ or _Picea pungens_)

which is commonly used as an ornamental tree on lawns and in parks,

can be told from the other spruces by its pale-blue or sage-green

color and its sharp-pointed, coarse-feeling twigs. Its small size

and sharp-pointed conical form are also characteristic.



It grows to a large size in Colorado and the Middle West. In the

Eastern States and in northern Europe where it is planted as an

ornamental tree, it is usually much smaller.







Tree Studies


How To Identify Trees
Group I The Pines
The White Pine (pinus Strobus)
The Pitch Pine (pinus Rigida)
The Scotch Pine (pinus Sylvestris)
Group Ii The Spruce And Hemlock
The Norway Spruce (picea Excelsa)
Hemlock (tsuga Canadensis)
Group Iii The Red Cedar And Arbor-vitae
Red Cedar (juniperus Virginiana)
Arbor-vitae; Northern White Cedar (thuja Occidentalis)
Group Iv The Larch And Cypress
The European Larch (larix Europaea)
Bald Cypress (taxodium Distichum)
Group V The Horsechestnut, Ash And Maple
The Horsechestnut
The White Ash (fraxinus Americana)
Sugar Maple (acer Saccharum)
Silver Maple (acer Saccharinum)
Red Maple (acer Rubrum)
Norway Maple (acer Platanoides)
Box Elder (acer Negundo)
Group Vi Trees Told By Their Form: Elm, Poplar, Gingko And Willow
American Elm (ulmus Americana)
Lombardy Or Italian Poplar (populus Nigra, Var Italica)
Gingko Or Maidenhair Tree (gingko Biloba)
Weeping Willow (salix Babylonica)
Group Vii Trees Told By Their Bark Or Trunk: Sycamore, Birch, Beech,
Blue Beech, Ironwood, And Hackberry
The Sycamore Or Plane Tree (platanus Occidentalis)
Gray Or White Birch (betula Populifolia)
American Beech (fagus Americana)
Blue Beech Or Hornbeam (carpinus Caroliniana)
Hackberry (celtis Occidentalis)
Group Viii The Oaks And Chestnut
White Oak (quercus Alba)
Black Oak (quercus Velutina)
Red Oak (quercus Rubra)
Pin Oak (quercus Palustris)
Chestnut (castanea Dentata)
Group Ix The Hickories, Walnut And Butternut
Shagbark Hickory (hicoria Ovata)
Mockernut Hickory (hicoria Alba)
Black Walnut (juglans Nigra)
Group X Tulip Tree, Sweet Gum, Linden, Magnolia, Locust, Catalpa,
Dogwood, Mulberry And Osage Orange
Tulip Tree (liriodendron Tulipifera)
Sweet Gum (liquidambar Styraciflua)
American Linden (tilia Americana)
The Magnolias