Key to Michigan's Natural Communities

A. Located in protected bays and abandoned coastal embayments along the shorelines of northern Lake Huron and Lake Michigan. Soils grade from calcareous sand or clay along shoreline to alkaline marl and organic deposits farther inland. Vegetation comprised of sedges, rushes, and calciphiles including spike-rushes (Eleocharis elliptica and E. rostellata), false asphodel (Tofieldia glutinosa), low calamint (Calamintha arkansana), Kalm's lobelia (Lobelia kalmii), grass-of-Parnassus (Parnassia glauca), Indian paintbrush (Castilleja coccinea), dwarf Canadian primrose (Primula mistassinica), fringed gentian (Gentianopsis procera), yellow lady's-slipper (Cypripedium calceolus var. parviflorum), white camas (Zigadenus glaucus), and shrubby cinquefoil (Potentilla fruticosa) .... Coastal Fen

B. Located in depressions in open dunes or between dune ridges including wind-formed depressions at the base of blowouts, hollows of open dune fields, and abandoned river channels that once flowed parallel to the lakeshore behind a foredune. Sandy soils are neutral to moderately alkaline sand sometimes covered by a thin layer of muck or marl. Vegetation dominated by rushes, sedges, and shrubs including Baltic rush, twig-rush (Cladium mariscoides), golden-seeded spike-rush (Eleocharis elliptica), beak-rush (Rhynchospora capillacea), sedges (Carex aquatilis, C. garberi, C. viridula, C. lasiocarpa), and shrubby cinquefoil, with calciphiles well represented .... Interdunal Wetland

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