American Basswood

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

AI-generated identification · may be incorrect
American Basswood

Leaf Morphology

Leaf Type

Simple, deciduous leaf

Shape

Cordate (heart-shaped) with an asymmetrical base

Margin

Serrate or coarsely toothed with sharp, forward-pointing teeth

Arrangement

Alternate arrangement along the twig

Venation

Palmate venation radiating from the base, transitioning into pinnate venation along the prominent midrib, with pronounced net-like reticulation.

Key Features

Distinctively heart-shaped leaves with an asymmetrical (unequally cordate) base, coarsely serrated margins, palmate-pinnate pale yellow venation, and alternate leaf arrangement.

Description

The American Basswood is a stately, large deciduous tree known for its straight trunk, soft and light wood, and heavily branched, rounded crown. Its leaves are notably heart-shaped and lopsided at the base. In early summer, the tree produces fragrant, yellowish-white flowers hanging in clusters from a leafy bract, which develop into small, nut-like fruits.

Habitat

Rich, moist, well-drained soils of deciduous hardwood forests, often found along streams, ravines, and lower slopes under moderate shade to full sun.

Native Range

Native to eastern and central North America, ranging from southeastern Canada down to northeastern Texas and Florida, commonly planted as an urban shade tree.

Identified on 10/7/2026