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Quercus macrocarpa Michx. Bur oak, blue oak, mossy-overcup oak, scrub oak
Bur oaks are natives of North America. Identification: This oak reaches 70-80' (21-24 m) in height, sometimes up to 100' (30 m). It is very drought-resistant. It prefers limestone soils. Leaves are usually about 6" (13 cm) long, sometimes up to 15" (38 cm), and very deeply divided. They are yellow-brown in the fall. This species has the largest acorns of any oak, 1-1½" (2.5-3.8 cm) long, half covered by the cap, which has a hairy or mossy fringe. See the Quercus comparison table. Online References:
The USDA Forest Service's Silvics of North America site The University of Connecticut Plant Database The Ohio State University PLANTFacts database Plants for a Future, a resource and information centre for edible and otherwise useful plants The Vanderbilt University Bioimages web site The Lady Bird Johnson Wildflower Center The Virginia Tech Department of Forest Resources and Environmental Conservation The USDA Forest Service's Fire Effects Information Database The University of Florida Institute of Food and Agricultural Sciences References:
Sibley, David Allen, The Sibley Guide to Trees, Alfred A. Knopf, 2009, p. 209
Quercus macrocarpa description by Thomas H. Kent, last updated 25 May 2020.
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9/7/2010 · Tower Hill Botanic Garden, Boylston, Massachusetts
5/22/2010 · Garden in the Woods, Framingham, Massachusetts
5/22/2010 · Garden in the Woods, Framingham, Massachusetts Range:
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