American basswood is a medium-sized tree with small, horizontal, often drooping branches forming a broad, rounded head. It often grows in clumps, with multiple sprouts emerging from the base of older trees.
Leaves are alternate, simple, 5–6 inches long, 3–5 inches wide, and broadest near the base. The leaf base is unequal (lopsided), and the margins rare coarsely toothed. The tip is pointed. The upper surface is dark green and shiny; the lower surface is paler, with tufts of hair in the vein axils.
Bark is light brown to gray, with deep furrows and narrow, flat-topped, long ridges that shed small, thin scales. Often with sprouts around the base of older trees.
Twigs are slender, smooth, green to brown, turning gray with age; pores are numerous; winter buds are dark red, egg-shaped, and ¼ inch long.
Blooms late May–July. The fragrant, pale yellow to whitish flowers are ½ inch in diameter and hang in clusters of 6–15 from a drooping, slender, smooth stalk. The stalk is attached to a strap-shaped, reduced leaf called a bract, which is 2–5 inches long and ¾-1½ inches wide.
Fruits August–October. Dry, woody, nearly round fruits are ¼ inch long and covered with dense brown hairs. The attached bract acts as a wing, helping the seeds spin and travel in the wind as they fall.
Similar species: White basswood (T. heterophylla) has a more limited distribution in Missouri, occurring mainly along rocky woods and bluffs bordering streams. Its leaves are densely but not coarsely toothed, and the lower surfaces are covered with white or brown matted, woolly hairs.
Height: typically to 60 feet; can reach 100 feet in deep, moist soils.
Statewide.
Habitat and Conservation
Occurs in moist woods on lower slopes, at the base of bluffs, and along streams. American basswood has a tendency to sprout from its roots, often forming clumps in the wild. Although widely distributed in the state, large populations are rarely encountered.
Human Connections
A fast-growing, long-lived tree popular for landscaping and along streets, its leaves turn yellow in autumn. The wood is lightweight and fine-textured, often used for carving, musical instruments, woodenware, toys, pulp, furniture, and boxes. Native Americans used the fibrous inner bark for making rope, thongs, baskets, and mats. The young leaves and the flowers are edible, and the flowers have been used as a medicinal "linden tea."
Ecosystem Connections
Bees make a high-quality honey out of the flowers’ nectar, and the fruit is eaten by many species of birds and rodents. Rabbits and deer browse the foliage. Because the wood is soft, older trees often develop cavities that are used for nesting by wood ducks and owls.




























