Carolina Nature

Trees, Shrubs, and Woody Vines of North Carolina

White Basswood (Tilia americana var. heterophylla)

Plantae>Magnoliophyta>Magnoliopsida>Malvales>Tiliaceae>Tilia americana L. var. heterophylla (Ventenat) Loudon

Tilia americana var. heterophylla

White Basswood is a fairly common tree in the Mountains of North Carolina, occasional in the Piedmont, that is distinguished from the American Basswood (Tilia americana var. americana) and Carolina Basswood (Tilia americana var. caroliniana) by the whitish, densely pubescent undersides of the leaves.

Caswell Co., NC 5/21/10.

Tilia americana var. heterophylla

Note that the white may not be obvious, depending on the lighting. Here's a photo of the exact same leaves as above, but backlit by the sun instead of photographed using flash to illuminate the undersides.

Caswell Co., NC 5/21/10.

Tilia americana var. heterophylla

The leaves, here seen from above, are large, deciduous, alternate, cordate, and regularly toothed.

Caswell Co., NC 5/21/10.

Tilia americana var. heterophylla flowers

The flowers (here unopened) and fruits are subtended by leafy bracts. Flowers open in early to mid-summer; fruits (which are round, similar to the photo at left) ripen in fall.

Caswell Co., NC 5/21/10.

Tilia americana var. heterophylla leaves

Grayson Co., VA 5/31/2009.

Tilia americana var. heterophylla flowers

Grayson Co., VA 5/31/2009.

Tilia americana var. heterophylla

Haywood Co., NC 5/9/08.

Tilia americana var. heterophylla

Hillsborough, Orange Co., NC 6/1/08.

Tilia americana var. heterophylla

The large deciduous leaves are alternate, cordate (heart-shaped), and finely toothed.

Hillsborough, Orange Co., NC 6/1/08.

Tilia americana var. heterophylla

Bark of a small tree.

Haywood Co., NC 5/9/08.

Tilia americana var. heterophylla

Bark of a large tree.

Hillsborough, Orange Co., NC 6/1/08.

Tilia americana var. heterophylla bark

Grayson Co., VA 5/31/2009.

Tilia americana var. heterophylla bark

Grayson Co., VA 5/31/2009.

Tilia americana var. heterophylla bark

Grayson Co., VA 5/31/2009.

Tilia americana var. heterophylla

Bark of a small tree.

Caswell Co., NC 5/21/10.

Tilia americana var. heterophylla

Bark of a larger tree.

Caswell Co., NC 5/21/10.

Tilia americana var. heterophylla

The decaying heartwood of this tree has been excavated by a Pileated Woodpecker.

Wilkes Co., NC 6/15/08.

Tilia americana var. heterophylla

A large White Basswood tree (with a Pecan tree to the left).

Hillsborough, Orange Co., NC 6/1/08.

 

Recommended Tree, Shrub, and Woody Vine Identification Guides

More information:
Floridata
NC State - Trees of the Maritime Forest
USDA PLANTS
Virginia Tech Dendrology