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5,133 species in Big Bend National Park
Calophya minuta
Caloplaca cinnabarina
Caloplaca rubelliana
Calosoma macrum
Calosoma peregrinator
Candelariella xanthostigma
Candelina mexicana
Canis familiaris
Capra hircus
Carbonicola anthracophila
Carlowrightia arizonica
Castilleja sessiliflora
Castolus ferox
Catocala ilia
Celastrina ladon
Celastrus scandens
Cenchrus spinifex
Centris lanosa
Centris mexicana
Centrodontus atlas
Cerastium brachypodum
Cerceris convergens
Ceutorhynchus adspersulus
Chamaesaracha edwardsiana
Chara braunii
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