FAGACEAE - - Beech Family

Quercus macrocarpa Michaux — Bur Oak

Bur Oak (Quercus macrocarpa) - Tree becoming 55 m. tall, the bark brown and often re-tinged, broken into irregular plates; leaf-blades obovate to spatulate in outline, 10—30 cm. long, finely tomentose beneath the pinnate lobes, spreading, the terminal lobe largest and usually coursely crenate; acorns long-stalked; cup deep-hemispheric or globular, 20—40 mm. wide, the upper scales with filiform tips; nut subglobose or broadly ellipsoid, 30—50 mm. long.

Habitat:

Rich bottomland forests, sometimes in drier forests and then usually over limestone or other calcareous rocks.

Habitat information from:
Weakley, Alan S., Flora of the Southern and Mid-Atlantic States, Working Draft of 21 May 2015.

The range of Quercus macrocarpa (Bur Oak)

Kartesz, J.T., The Biota of North America Program (BONAP). 2015. North American Plant Atlas. (http://bonap.net/napa). Chapel Hill, N.C. [maps generated from Kartesz, J.T. 2015. Floristic Synthesis of North America, Version 1.0. Biota of North America Program (BONAP). (in press)].