In some pedons the upper part of the C horizon does not effervesce with dilute HCl. The reaction of the C horizon ranges from neutral to moderately alkaline. There are no other series in the same family. Closely related are the Capac and Locke series. Capac soils are fine-loamy and have lower chromas in their B horizon.
Locke soils are mollic intergrades.
Teasdale soils are on till plains and the smoother part of low moraines of Wisconsinan Age. The Teasdale soils are the somewhat poorly drained member of a drainage sequence that includes the well drained Hillsdale and poorly drained Barry soils. The well drained Riddles soils are common associates. Somewhat poorly drained. Surface runoff is slow.