Fagus grandifolia

Fagus grandifolia is a large deciduous tree[4] growing to 16–35 metres (52–115 feet) tall,[5] with smooth, silver-gray bark. The leaves are dark green, simple and sparsely-toothed with small teeth that terminate each vein, 6–12 centimetres (2+1⁄4–4+3⁄4 inches) long (rarely 15 cm or 6 in), with a short petiole. The winter twigs are distinctive among North American trees, being long and slender (15–20 millimetres or 5⁄8–3⁄4 inch by 2–3 mm or 3⁄32–1⁄8 in) with two rows of overlapping scales on the buds. Beech buds are distinctly thin and long, resembling cigars; this characteristic makes beech trees relatively easy to identify. The tree is monoecious, with flowers of both sexes on the same tree. The fruit is a small, sharply-angled nut, borne in pairs in a soft-spined, four-lobed husk. It has two means of reproduction: one is through the usual dispersal of seedlings, and the other is through root sprouts, which grow into new trees.[6]

Trees in the southern half of the range are sometimes distinguished as a variety, F. grandifolia var. caroliniana, but this is not considered distinct in the Flora of North America. The Mexican beech (F. grandifolia var. mexicana), native to the mountains of central Mexico, is closely related, and is treated as a subspecies of American beech, but some botanists classify it as a distinct species. The only Fagus species found in the Western Hemisphere (assuming the Mexican variety is treated as a subspecies), F. grandifolia is believed to have spanned the width of the North American continent all the way to the Pacific coast before the last ice age.

Two subspecies are generally recognized:[7]

Image	Scientific name	Distribution
	Fagus grandifolia var. grandifolia	Eastern Canada, east-central United States.
	Fagus grandifolia var. mexicana (Martínez) A.E.Murray	Mexico (Tamaulipas to Hidalgo and Puebla).

The American beech is native to eastern North America, from Nova Scotia west to southern Ontario in southeastern Canada, west to Wisconsin and south to eastern Texas and northern Florida in the United States, as well as the states of Hidalgo, Veracruz, Tamaulipas, Puebla, San Luis Potosí, and Tabasco in Mexico.[9] Mature specimens are rare in lowland areas as early settlers quickly discovered that the presence of the tree indicated good farmland.

The American beech is a shade-tolerant species,[5] commonly found in forests in the final stage of succession. Few trees in its natural range other than sugar maple match it for shade tolerance. Ecological succession is essentially the process of forests changing their composition through time; it is a pattern of events often observed on disturbed sites.[10] Although sometimes found in pure stands, it is more often associated with sugar maple (forming the beech–maple climax community), yellow birch, and eastern hemlock, typically on moist, well-drained slopes and rich bottomlands. Near its southern limit, it often shares canopy dominance with southern magnolia. Although it has a reputation for slow growth (sometimes only 13 feet in 20 years), rich soil and ample moisture will greatly speed the process up. American beech favors a well-watered, but also well-drained spot and is intolerant of urban pollution, salt, and soil compaction. It also casts heavy shade and is an extremely thirsty tree with high moisture requirements compared to oaks, so it has a dense, shallow root system.[11]

The mast (crop of nuts) from American beech provides food for numerous species of animals. Among vertebrates alone, these include various birds[5] including ruffed grouse and wild turkeys, raccoons,[5] foxes,[5] white-tailed deer,[5] rabbits, squirrels,[5] opossums, pheasants, black bears,[5] and porcupines.[5] Beech nuts were one of the primary foods of the now-extinct passenger pigeon;[5] the clearing of beech and oak forests is pointed to as one of the major factors that may have contributed to the bird's extinction.[12] Some Lepidoptera caterpillars feed on beeches. Deer occasionally browse on beech foliage,[5] but it is not a preferred food.

American beech is an important tree in forestry. The wood is hard and difficult to cut or split, although at 43 pounds per cubic foot (0.69 g/cm³) it is not exceptionally heavy, and it also rots relatively easily. It is used for a wide variety of purposes, most notably bentwood furniture as beech wood easily bends when steamed. It also makes high quality, long-burning firewood.

Like European beech bark, the American beech bark is smooth and uniform, making it an attraction for people to carve names, dates, decorative symbols such as love hearts or gang identifiers, and other material into its surface.[20] One such beech tree in Louisville, Kentucky, in what is now the southern part of Iroquois Park, bore the legend "D. Boone kill a Bar 1803."[21] The beech finally fell over in 1916 during a storm; its age was estimated at around 325 years. Its trunk is now on display at the Filson Historical Society.

It is sometimes planted as an ornamental tree, but even within its native area, it is planted much less often than the European beech. Although American beech can handle hotter climates,[22] its European cousin is faster-growing and more pollution-tolerant, in addition to being easier to propagate.

American beech does not produce significant quantities of nuts until the tree is about 40 years old. Large crops are produced by 60 years. The oldest documented tree is 246 years old.[23] The fruit is a triangle-shaped shell containing 2–3 nuts inside, but many of them do not fill in, especially on solitary trees. Beech nuts are sweet and nutritious,[5] can be eaten raw by wildlife and humans,[24] or can be cooked.[25] They can also be roasted and ground into a coffee substitute.[5]

The leaves are edible when cooked.[5] The inner bark can be dried and pulverized into bread flour as an emergency food.[5]

Wikimedia Commons has media related to Fagus grandifolia.

• efloras.org: range map
• Interactive distribution map for Fagus grandifolia Archived 2014-11-24 at the Wayback Machine
• Bioimages.vanderbilt.edu — Fagus grandifolia photo gallery