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Bur Oak
Quercus macrocarpa

Also called the Mossycup Oak, this large deciduous tree is native to North America. Though slow-growing, this oak can be massive, reaching heights of 35 m with a trunk over 3 m in diameter. Adult trees produce acorns that are the largest of any North American oak. These acorns are eaten by a variety of wildlife, including American black bears.

Habitat:Dry uplands and moist bottomlands.
Growth Habit:Deciduous tree, growing to 25 m tall, branches and branchlets with corky-winged projections.
Bloom Time:Early to mid-spring.
Longevity:Long-lived.
Presence in US:AL AR CT DC IA IL IN KS KY LA MA MD ME MI MN MO MS MT ND NE NH NJ NM NY OH OK PA SD TN TX VA VT WI WV WY
Presence in Canada:AB MB NB ON QC SK
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This project was supported in part by NSF Grant IIS-03-25867 (ITR: An Electronic Field Guide: Plant Exploration and Discovery in the 21st Century) and by the Washington Biologists' Field Club.
Any opinions, findings, conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the official views, opinions, or policy of the National Science Foundation (NSF).