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2,947 species in Isle Royale National Park
Callibaetis ferrugineus
Calliergon obtusifolium
Calliergon richardsonii
Calliergonella lindbergii
Callobius bennetti
Callophrys augustinus
Caloplaca fraudans
Caloplaca sideritis
Calypogeia integristipula
Calyptra canadensis
Calystegia sepium
Camponotus novaeboracensis
Capnia vernalis
Carabus maeander
Carabus nemoralis
Carex blanda
Carex brevior
Carex cephalophora
Carex cryptolepis
Carex deweyana
Carex eburnea
Carex folliculata
Carex oederi
Carex tonsa
Carex vaginata
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