Mingo soils have mollic epipedons. Slidell soils have chroma less than 1.5 throughout the upper 12 inches. Bolar soils are on positions similar to Medlin soils. Mingo soils are above on convex ridgetops. Sanger, Slidell, and Somervell soils are usually above on broad stream divides.
Water enters rapidly when the soil is dry and cracked, and very slowly when the soil is moist.
Native vegetation is tall and mid grasses such as bluestems, indiangrass, sideoats grama, Texas wintergrass, and threeawn. Scattered elm, hackberry, and mesquite trees occur in places. A few areas are in improved bermudagrass pastures. Mainly in Grand Prairie of north-central Texas. The series is moderately extensive.