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Notes: Color of Immature Cones of Several Pacific Northwest Conifers

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In the Cascade and Coast Ranges of Oregon and Washington Abies amabilis, A. lastocarpa, A. magnifica var. shastensis, A. procera, Picea engelmannii, Pinus monticola, Pseudotsuga menziesii, and Tsuga mertensiana can produce immature cones either red (or purple) or green in color. Abundance and distribution of the color varies in each species. Variation in cone coloration on individual trees is related to exposure of the cones to sunlight.

Document Type: News

Affiliations: Research Forester, Pacific Northwest Forest & Range Expt. Sta., Forest Service, U.S. Dept. Agric., Portland, Oreg.

Publication date: 1964-03-01

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  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
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