Bryophyte nomenclature follows Crum and Anderson (1981). Vascular plant nomenclature follows Rhoads and Block (2007). * limited to sites with higher soil calcium Soils are typically rich, with pH ranging from 6.5 to 8.0.Canopy dominated by sugar maple ( Acer saccharum) and black maple ( Acer nigrum).Found on floodplains of small to medium-sized tributaries of the Ohio River Basin and Delaware River.Uncommon but not rare some cause for long-term concern due to declines or other factors. These forests typically have more structural diversity than the Silver Maple Floodplain Forest types, with sugar maple and white ash common in the subcanopy. On more exposed sites, with higher flooding velocities and coarser substrates, this community shares many characteristics with the Sycamore – Mixed hardwood Floodplain Forest and sycamore ( Platanus occidentalis) may be a co-dominant. In flood channels and floodplain depressions, black ash ( Fraxinus nigra) and red maple ( Acer rubrum) may be present. While usually present, sycamore ( Platanus occidentalis) and silver maple ( Acer saccharinum) generally do not exceed 25% of the canopy. In addition to sugar maple ( Acer saccharum) or black maple ( Acer nigrum), one of which typically dominates the overstory, the canopy is composed of a diverse mix of associated tree species including basswood ( Tilia americana), white ash ( Fraxinus americana), green ash ( Fraxinus pennsylvanica), bitternut hickory ( Carya cordiformis), and American beech ( Fagus grandifolia). There may be local variations seen in this type due to variation in microtopography within the floodplain.

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