Picea mariana

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Standard Cyclopedia of Horticulture

Picea mariana, BSP. (P. nigra, Link. P. brevifolia, Peck). The native Black Spruce. Figs. 2942, 2943. Tree, usually to 20-30 ft. or occasionally to 100 ft., with slender, often pendulous branches forming a narrow, irregular head: bark gray-brown: young branches brown or yellowish brown: lvs. quadrangular, obtusish, dull dark or bluish green, bloomy especially on the upper side, 1/4 - 3/4 in. long: fls. purple: cones oval- oblong, globose-ovate when open, dark purple while young, later dull grayish brown. 1/2 - 1 1/2 in. long; scales rounded and finely denticulate at the margin. From Canada to Va., Minn, and Brit. Col. S.S. 12:596. Very variable in habit; cone-bearing trees often only a few feet high when growing in swamps. The most ornamental garden form is var. Doumetii, Schneid. (P. nigra Doumetii, Carr.), with ascending crowded branches forming a dense conical pyramid. A similar form, somewhat broader at the base with more light bluish green foliage, is var. Beissneriana, Rehd. (P. nigra mariana, Beissn.). G.C. III. 11:80. Var. fastigiata, Rehd. (P. nigra fastigiata, Carr. Abies nigra pumila, Knight). A columnar form with ascending branches and short, acute lvs. Var. nana, Rehd. (P. nigra nana, Beissn.). A dwarf subglobose form with light bluish green lvs. Gt. 50, p. 193. CH The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.

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References

• Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963

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