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2,243 species in Mammoth Cave National Park
Cladonia rangiferina
Cladonia verticillata
Climacium americanum
Clitoria mariana
Conchylodes ovulalis
Coreopsis major
Corydalus cornutus
Corylus americana
Cynanchum laeve
Cyprogenia stegaria
Cyrtomium fortunei
Dactylocythere steevesi
Dermacentor variabilis
Diapheromera femorata
Dichanthelium boscii
Dichotomius carolinus
Didelphis virginiana
Dolichovespula maculata
Dryopteris intermedia
Dulichium arundinaceum
Ectropis crepuscularia
Episimus argutana
Eubranchipus holmanii
Euclea delphinii
Eupatorium album
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