Well forested, New Hampshire supports an abundance of elm, maple, beech, oak, pine, hemlock, and fir trees. Among wild flowers, several orchids are considered rare. Three New Hampshire plant species were listed as threatened or endangered in 2003; the small whorled pogonia was threatened and Jesup's milk-vetch and Northeastern bulrush were endangered.
Among native New Hampshire mammals are the white-tailed deer, muskrat, beaver, porcupine, and snowshoe hare. Nine animal species were listed as threatened or endangered in 2003, including the Karner blue butterfly, bald eagle, dwarf wedgemussel, finback whale, and leatherback sea turtle.