Leaf Morphology
Leaf Type
Simple, deciduous leaf
Shape
Elliptic to obovate with an asymmetric (unequal) leaf base
Margin
Doubly serrate (coarsely toothed with smaller teeth on the main teeth)
Arrangement
Alternate arrangement along the twig
Venation
Pinnate venation with very straight, parallel lateral veins extending to the margin
Key Features
Distinguished primarily by its strongly asymmetric leaf base where one side of the blade attaches lower on the petiole than the other, along with doubly serrate margins and prominent straight parallel veins.
Description
The American Elm is a large, majestic deciduous tree known historically for its graceful, vase-like crown that once arched over many American streets. It features dark grey bark with interlaced ridges, small inconspicuous flowers in early spring, and papery winged samaras for seeds.
Habitat
Typically found in rich, moist soils along floodplains, bottomland forests, and along streams, though highly adaptable to urban environments.
Native Range
Native to eastern North America, stretching from Nova Scotia west to Alberta, and south to Florida and Texas.