They have an argillic horizon. Kipson soils are shallow over shale and are on similar position. Martin and Tully soils have an argillic horizon and are on foot slopes. Sogn soils are shallow over limestone and generally occupy less sloping areas. Runoff is medium or rapid.
Permeability is slow.
Mostly in native grass. Vegetation is mixed tall and mid grasses. Some areas are cultivated. The principal crops are winter wheat and grain sorghum. Largely confined to the Bluestem Hills of east-central Kansas.