Among deciduous trees the state is noted for its sugar maples; birch and beech are common on the hills, and oaks, elm, hickory, ash, poplar, basswood, willow, chestnut and butternut on the less elevated areas.
In the Adirondack region the trees were principally white pine, spruce, hemlock and balsam, but mixed with these were some birch, maple, beech and basswood, and smaller numbers of ash and elm; in the swamps of this region were also larch and cedar.
Originally white pine was the principal timber of the Adirondacks, but most of the merchantable portion has been cut, and in 1905 nearly one-half of the lumber product of this section was spruce, the other half mainly hemlock, pine and hardwoods (yellow birch, maple, beech and basswood, and smaller amounts of elm, cherry and ash).
The most valuable trees for lumber are spruce, white pine, hemlock, cedar, white birch, ash, maple and basswood; all excepting pine and hemlock and poplar in addition are ground into wood pulp for the manufacture of paper.
Many trees of the eastern forest, such as basswood, sugar, river and red maple, red, white and black ash, red and rock elm, black and bur oak, white and red pine and red cedar find their western limit here.
Basswood (Tilia americans) is common in Canada and in the northern United States.
Along the southern boundary was a part of the great hardwood forest of the Ohio Basin with woods varying with soil and drainage: on the drier gravel lands were oak forests consisting of red, black and white oak, hickory, ash, cherry, basswood and walnut; in depressions there were maple, elm, ash, beech, sycamore, poplar and willow; and in the sontheast there were a few chestnuts and tulip trees.
Red oak, birch, elm, ash, white cedar, hemlock, basswood, spruce, poplar, balsam, fir and several other kinds of trees are found in many sections; but a large portion of the merchantable timber, especially in the lower peninsula, has been cut.'
About 60% (both in quantity and value) of the lumber sawed in 1905 was white pine; next in importance were hemlock (more than one-fourth in quantity), basswood (nearly 4%) and, in smaller quantities, birch, oak, elm, maple, ash, tamarack, Norway pine, cedar and spruce.
All the section boxes used in the United Kingdom are made in the U.S.A. or in Canada from the timber known as basswood, no native wood being suitable for the purpose.