Bur Oak (Mossycup Oak)

Quercus macrocarpa · Fagaceae (Beech and Oak family)

AI-generated identification · may be incorrect
Bur Oak (Mossycup Oak)

Leaf Morphology

Leaf Type

Simple, deciduous

Shape

Obovate, deeply lobed with a distinct large terminal lobe and narrow middle portion

Margin

Lobed with rounded, sinuate edges

Arrangement

Alternate

Venation

Pinnate with a prominent midrib and raised secondary veins

Key Features

Massive acorns with fringed, mossy cupules covering half or more of the nut; deeply lobed leaves pinched in the middle; corky, ridged twigs.

Description

The Bur Oak is a magnificent, long-lived shade tree famous for its massive acorns featuring a distinctive mossy or fringed cap, which is prominently displayed in the provided image. The bark is deeply furrowed and ruggedly corky, adding to its stout, majestic appearance in winter landscapes.

Habitat

Thrives in rich bottomland forests, riverbanks, and plains, often found growing in open savannas and prairies. Prefers full sun and moist, well-draining soils but exhibits high drought tolerance.

Native Range

Native to central and eastern North America, spanning from Nova Scotia west to Saskatchewan and south to Texas.

Identified on 10/12/2026