American Basswood

Tilia americana · Malvaceae (Mallow family, formerly placed in Tiliaceae)

AI-generated identification · may be incorrect
American Basswood

Leaf Morphology

Leaf Type

Simple leaf, deciduous

Shape

Cordate (heart-shaped) or broadly ovate with an asymmetrical base

Margin

Serrate (coarsely toothed with sharp, forward-pointing teeth)

Arrangement

Alternate

Venation

Palmate-pinnate hybrid venation radiating from the asymmetrical base, with prominent yellowish midrib and primary veins.

Key Features

Distinctively large, heart-shaped leaves with a heavily asymmetrical (skewed) base, coarsely toothed margins, and a long slender petiole.

Description

The American Basswood is a large, stately deciduous tree known for its straight trunk, soft lightweight wood, and dense canopy of massive heart-shaped leaves. In early summer, it produces fragrant, cream-colored flowers that hang in drooping clusters, followed by small, round, woody nutlets attached to a leafy bract.

Habitat

Rich deciduous forests, moist uplands, ravine slopes, and along streams in deep, well-drained, nutrient-rich soils.

Native Range

Native to eastern and central North America, ranging from southeastern Canada down to northeastern Texas and stretching west to the Great Plains.

Notes

Northern Minnesota

Identified on 10/9/2026
American Basswood | Leaf Identifier