Biogeography
 
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Sedges can be found throughout Indiana, but are most diverse in the northern counties. The map below shows some of Indiana's bio-regions. Using these regions, the chart shows how many different species of non-Carex sedges are known from each location. The regions with the highest numbers are, therefore, the best places to find sedges.

Regions of Indiana
Bioregion Number of Species
Northwest Morainal (NWM) 61
Northern Lakes (NL) 51
Grand Prairie (GP) 47
Central Till Plain (CTP) 36
Southwestern Lowland (SWL) 36
Highland Rim (HR) 33
Blue Grass (BG) 31

Highlighted Species Bioregions Present In
Cladium mariscoides NWM, NL, GP, CTP
Cyperus esculentus NWM, NL, GP, CTP, SWL, HR, BG
Eleocharis obtusa NWM, NL, GP, CTP, SWL, HR, BG
Eriophorum angustifolium NWM, NL
Eriophorum gracile NWM, NL, CTP
Rhynchospora macrostachya NWM, NL
Scirpus atrovirens NWM, NL, GP, CTP, SWL, HR, BG

Information for this page is based upon Charles C. Deam's Flora of Indiana.