The Ap horizon has hue of 10YR, value of 3 through 5, and chroma of 2 or 3. The Bt horizon has hue of 7.5YR or 10YR, value of 4 or 5, and chroma of 4 through 8, and have distinct high and low chroma mottles. Texture is silt loam or silty clay loam. The Bx horizon above the 2Bx1 horizon has hue of 7.5YR through 2.5Y, value of 4 or 5, and chroma of 2 through 6, and has distinct mottles. Faces of prisms are neutral or have hue of 10YR or 2.5Y, value of 4 through 7, and chroma of 0 or 1.
Structure is very coarse prismatic parting to platy or subangular blocky.
The 2B and 2C horizons have hue of 2.5YR through 2.5Y, value of 3 through 5, and chroma of 2 through 4. Texture of the fine-earth fraction is loam or silt loam. The Haubstadt, Lawrence, Pekin, Penlaw, Robbs, Rohrersville, and Rossmayne series are in the same family. Haubstadt and Rossmayne soils have a solum thickness of more than 60 inches. Lawrence, Pekin, Penlaw, Robbs, Rohrersville, and Rossmayne soils do not have a lithologic discontinuity in the series particle-size control section.