Leaf Morphology
Leaf Type
Simple, deciduous leaf
Shape
Oblanceolate to elliptical with a notably asymmetric (unequal) cordate or rounded base and an acuminate tip
Margin
Doubly serrate (coarsely toothed with smaller teeth on the primary teeth)
Arrangement
Alternate arrangement along the twig
Venation
Pinnate venation with straight, parallel side veins extending to the margin teeth and a prominent central midrib
Key Features
Unequal (asymmetric) leaf base, doubly serrate margins, rough upper leaf surface, alternate arrangement, and the classic vase-shaped tree form
Description
The American Elm is a majestic, large deciduous tree famously recognized for its graceful vase-like or umbrella-like canopy shape. It features dark grey, deeply furrowed bark, inconspicuous wind-pollinated flowers, and papery winged samaras that disperse in the spring. The leaves are characteristically asymmetric at the base, creating a lopsided appearance that is a hallmark of the elm family.
Habitat
Typically found in rich bottomland forests, floodplains, along streams, and in moist, well-drained soils, though it adapts well to urban conditions
Native Range
Native to eastern North America, stretching from Nova Scotia west to Alberta, and south to Florida and Texas