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Numerical Taxonomy of Southern Red Oak in the Vicinity of Nacogdoches, Texas

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Five trees from each of 4 southern red oak varieties, as described by Vines (1960), were tentatively selected near Nacogdoches, Texas, by inspection of leaf forms. Fifteen twig, bud, and floral characteristics were then measured on each tree and these data were subjected to several numerical analyses. Three grouping analyses of the twig, bud, and floral characteristics failed to segregate 4 groups consistent with the original leaf-form classification, but did identify two groups distinguishable by both leaf and twig morphology. The data support 2 taxa within Quercus falcata, one including Vines' varieties falcata and triloba, the other embracing varieties leucophylla and pagodaefolia. Apart from leaf form, number of male flowers per ament best separated the 2 taxa. Whether these are appropriately species or varieties requires further study. FOREST SCI. 23:290-298.

Keywords: Morphology; Quercus falcata; Varieties

Document Type: Journal Article

Affiliations: Graduate Assistant, Colorado State University, Ft. Collins, CO.

Publication date: September 1, 1977

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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.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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