There are the Bayoudan and Vaiden series in the same family, and the Brooksville , Burkville, Lacerda , Lebeau , Louin , Morse , Naclina , Redco , Tahoula , Terouge , Vamont , and Zilaboy series in related families. Bayoudan soils are moderately well drained and have gypsum crystals in the lower part of the solum. Vaiden soils have an argillic horizon and formed over weathered chalk or calcareous clay. Burkville and Redco soils have a yellower hue in the upper part of the control section and do not have aquic conditions in the upper 40 inches of the solum. Lacerda soils do not have red mottles within a depth of 20 inches.
Lebeau soils are slightly acid to moderately alkaline throughout the solum.
Brooksville, Terouge, and Zilaboy soils have lower value colors in the upper part of the solum. Morse and Tahoula soils have a less acid control section and are better drained. Louin, Naclina, and Vamont soils have 35 to 60 percent clay in the control sections. Bellwood soils are on nearly level to strongly sloping Coastal Plain uplands. They formed in acid clayey, Tertiary age sediments.