Southeastern mixed forests grow in below the pines. Sugar maple ("Acer saccharum"), a shade tolerant tree, grows amid the oaks and hickories in the northern part of this ecoregion. Mesic forests occur in fertile, mesic, low-elevation habitats such as deep ravines and sheltered north- or east-facing slopes. Dominant trees include American beech ("Fagus grandifolia"), tulip tree ("Liriodendron tulipifera"), northern red oak, white ash ("Fraxinus americana"), black maple ("Acer nigrum"), sugar maple ("Acer saccharum"), basswood ("Tilia americana"), and bitternut hickory ("Carya cordiformis"). Understory trees include pawpaw ("Asimina triloba") and painted buckeye ("Aesculus sylvatica"). Mesic mixed hardwood forests grow on mesic uplands, ravines, lower slopes,
Fagus Factory are left open and the piers are recessed leaving the glass surface to the front. Gropius describes this transformation by saying, "The role of the walls becomes restricted to that of mere screens stretched between the upright columns of the framework to keep out rain, cold and noise" At the time of the design of Fagus, Gropius was collecting photographs of industrial buildings in the USA to be used for a Deutscher Werkbund publication. The design of these American factories was also a source of inspiration for Fagus. Carl Benscheidt (1858–1947) founded the Fagus company in 1910. He had then