From: J. White and M. H. Madany. 1978. Classification of natural communities in Illinois. Pages 310-405 (Appendix 30) in J. White, Illinois Natural Areas Inventory Technical Report. Volume 1: Survey Methods and Results. Illinois Natural Areas Inventory, Department of Landscape Architecture, University of Illinois at Urbana/Champaign.

FOREST

• Upland Forest
  
  • Xeric upland forest
    
  • Dry upland forest
    
  • Dry-mesic upland forest
    
  • Mesic upland forest
    
  • Wet-mesic upland forest
    

• Sand forest
  
  • Dry sand forest
    
  • Dry-mesic sand forest
    
  • Mesic sand forest

• Floodplain forest
  
  • Mesic floodplain forest
    
  • Wet-mesic floodplain forest
    
  • Wet floodplain forest

• Flatwoods
  
  • Northern flatwoods
    
  • Southern flatwoods
    
  • Sand flatwoods

PRAIRIE

• Prairie (= blacksoil prairie)
  
  • Dry prairie
    
  • Dry-mesic prairie
    
  • Mesic prairie
    
  • Wet-mesic prairie
    
  • Wet prairie

• Sand Prairie
  
  • Dry sand prairie
    
  • Dry-mesic sand prairie
    
  • Mesic sand prairie
    
  • Wet-mesic sand prairie
    
  • Wet sand prairie

• Gravel Prairie
  
  • Dry gravel prairie
    
  • Dry-mesic gravel prairie
    
  • Mesic gravel prairie

• Dolomite Prairie
  
  • Dry dolomite prairie
    
  • Dry-mesic dolomite prairie
    
  • Mesic dolomite prairie
    
  • Wet-mesic dolomite prairie

  • Wet dolomite prairie

• Hill Prairie
  
  • Loess hill prairie
    
  • Glacial drift hill prairie
    
  • Gravel hill prairie
    
  • Sand hill prairie

• Shrub Prairie
  
  • Shrub prairie

SAVANNA

• Savanna
  
  • Dry-mesic savanna
    
  • Mesic savanna

• Sand Savanna
  
  • Dry sand savanna
    
  • Dry-mesic sand savanna

• Barren
  
  • Dry barren
    
  • Dry-mesic barren
    
  • Mesic barren

• Marsh
  
  • Marsh
    
  • Brackish marsh

• Swamp
  
  • Swamp
    
  • Shrub swamp

• Bog
  
  • Graminoid bog
    
  • Low shrub bog
    
  • Tall shrub bog
    
  • Forested bog

• Fen
  
  • Calcareous floating mat
    
  • Graminoid fen
    
  • Low shrub fen
    
  • Tall shrub fen
    
  • Forested fen

• Sedge Meadow
  
  • Sedge Meadow
  • Panne
    
  • Panne

• Seep and Spring
  
  • Seep
    
  • Acid gravel seep
    
  • Calcareous seep
    
  • Sand seep
    
  • Spring community

LAKE AND POND

• Pond
  
  • Pond

• Lake
  
  • Lake
    
  • Great lake

STREAM

• Creek
  
  • Low-gradient creek
    
  • Medium-gradient creek
    
  • High-gradient creek

• River
  
  • Low-gradient river
    
  • Medium-gradient river
    
  • Major river

PRIMARY

• Glade
  
  • Sandstone glade
    
  • Limestone glade
    
  • Shale glade

• Cliff
  
  • Sandstone cliff community
    
  • Limestone cliff community
    
  • Dolomite cliff community
    
  • Sandstone overhang community
    
  • Eroding bluff community

• Lake shore
  
  • Beach
    
  • Foredune

CAVE

• Cave
  
  • Terrestrial cave community
    
  • Aquatic cave community

CULTURAL

• Cropland
  
• Pastureland
  
• Successional field
  
• Developed land
  
• Tree plantation
  
• Artificial pond
  
• Artificial lake
  
• Prairie restoration

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