Trees of secondary importance included chinkapin oak, Ohio buckeye, white ash, box-elder, and hackberry (importance values 33, 26, 18, 14, and 11, respectively).
The importance of box-elder and white ash was due to their many small-diameter stems.
Of secondary importance were Ohio buckeye, chinkapin oak, white ash, and box-elder (importance values 24, 22, 16, and 15, respectively).
The importance of box-elder and ash was due to the rapid growth of many small stems.
In the less disturbed southern part of the valley, sugar maple was clearly the dominant tree, with black walnut, box-elder, white ash, slippery elm, and red oak of secondary importance (Table 6).