Family: Fagaceae
bur oak
[Quercus macrocarpa f. olivaeformis Michx., more...]
Christopher Noll
Mary Ann Feist
University of Wisconsin - Madison (WIS-VP)
Etymology: Quercus: Latin for oak
Plants: perennial, deciduous tree to 98' + tall; dark gray brown, flat-ridged or scaly bark often with corky wings
Leaves: obovate to narrowly elliptic in outline, often fiddle-shaped, bases rounded to pointed, edges lobed and/or toothed with deepest lobes near the base, rounded tip becoming merely toothed, upper side dark dull green, underside light green to whitish
Flowers: smooth buds; blooms in spring
Fruits: 1-3 acorns on stout stalks; semi-circular to turban-like cup covering 1/2-7/8 of the nut; light brown to grayish, oval to oblong nut
Habitat: moist to wet; bottomlands, prairies, savannas; usually on limestone or calcareous clays
Conservation Status: Native
Plants: perennial, deciduous tree to 98' + tall; dark gray brown, flat-ridged or scaly bark often with corky wings
Leaves: obovate to narrowly elliptic in outline, often fiddle-shaped, bases rounded to pointed, edges lobed and/or toothed with deepest lobes near the base, rounded tip becoming merely toothed, upper side dark dull green, underside light green to whitish
Flowers: smooth buds; blooms in spring
Fruits: 1-3 acorns on stout stalks; semi-circular to turban-like cup covering 1/2-7/8 of the nut; light brown to grayish, oval to oblong nut
Habitat: moist to wet; bottomlands, prairies, savannas; usually on limestone or calcareous clays
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 5, Wetland Indicator = FAC- Wisconsin Natural Resources Magazine: Information and Photos USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Trees: Photos, descriptions, information USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Virginia Tech Dept. of Forestry, College of Natural Resources: detailed description and photographs Landscape Plants of the Upper Midwest; UW-Extension: Interactive guide providing information on cultivation including: soil, zone, growth rate, landscape uses, pruning, light requirements; with photos and Latin name pronounciation
Mary Ann Feist
Matthew L. Wagner
Paul Drobot
Aaron_Carlson
Aaron_Carlson
Merel R. Black
Robert W. Freckmann
Matthew L. Wagner
Paul Drobot
Michael Clayton
Robert W. Freckmann
Paul Drobot
Christopher Noll
Merel R. Black
Robert R. Kowal
Kenneth J. Sytsma
Paul Drobot
Christopher Noll
Janice Stiefel
Derek Anderson
Derek Anderson
Derek Anderson
Botanical Illustration
Botanical Illustration
