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4,118 species in Yellowstone National Park
Centronyx bairdii
Cetraria islandica
Chaoborus americanus
Chara globularis
Chara zeylanica
Chimarra utahensis
Chlorochroa congrua
Chroococcus varius
Chroogomphus vinicolor
Penstemon glaber
Chrysothrix chlorina
Cicuta douglasii
Cinna latifolia
Circinaria contorta
Circinaria hispida
Cistothorus stellaris
Cladonia bacilliformis
Cladonia cyanipes
Cladonia multiformis
Cladonia ochrochlora
Cladonia portentosa
Cladonia subulata
Cladonia symphycarpa
Cladonia verticillata
Claytonia megarhiza
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