Killarney soils are on lower slopes and have a fragipan. Knobtop soils occupy the gentle to sloping mountain ridges and tops and contain less than 15 percent coarse fragments. Loughboro soils are on nearly level areas at the base of the mountains. They are deep, poorly drained soils and contain only a trace of coarse fragments. Runoff is high.
Permeability is moderate.
Water saturates the horizon just above the bedrock for short periods during late winter or early spring. Nearly all these soils remain in mixed hardwood forest with a few shortleaf pine in some places. On the most shallow sites there are some native grasses and shrubs with a sparse stand of trees. The series is of moderate extent. St. Francois County, Missouri, 1979.