Longrie soils are underlain by limestone bedrock. Rubicon soils are without the darker colored upper subsoils and gravelly substratums. Surface runoff is negligible to low depending on the slope. Permeability is very rapid. Most areas of this soils are forested.
Overstory vegetation consists of sugar maple, quaking aspen, red pine and paper birch.
Some of the common forest understory vegetation includes sugar maple, hazelnut, ladyfern, spinulose woodfern, American fly honeysuckle, Solomons-seal, rosy twistedstalk, and Canada mayflower. Eastern Upper Peninsula and northern Lower Peninsula of Michigan. The Springlake series is inextensive. Mackinac County, Michigan, 1994.