The E horizon, where present, has hue of IOYR, value of 5 or 6, and chroma of 3 or 4. Reaction ranges from very strongly acid to slightly acid. Reaction is very strongly acid or strongly acid. It is commonly silty clay loam but may be silt loam in the lower part in some pedons. Clay content ranges from 24 to 35 percent.
Reaction ranges from very strongly acid to moderately acid.
It is silt loam with clay content of 20 to 27 percent. Reaction ranges from very strongly acid to neutral. No other series is in this family. The Stoy soils are on nearly level to gently sloping ridgetops on loess covered Illinoian till plains and bedrock plateaus. Slopes range from 0 to 10 percent.