They formed in sandy marine sediments. Near the type location, the mean annual temperature is about 72 degrees F., and the mean annual precipitation is about 55 inches. Slopes range from 0 to 2 percent. Okeechobee County, Florida. Thickness of the sand exceeds 80 inches.
Soil reaction ranges from extremely acid to neutral throughout.
Texture is sand, fine sand, or their mucky analogs. A thin Oa horizon consisting of muck, less than 7 inches thick, may be present in some areas. Redoximorphic features in shades of gray, brown, and yellow range from none to common. Texture is sand or fine sand. The E portion has colors similar to that of the E horizon.