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4,849 species in Grand Canyon National Park
Cotalpa flavida
Cratypedes neglectus
Crocidema arizonica
Croton texensis
Crotophaga sulcirostris
Cryptantha ambigua
Cryptantha fendleri
Cryptantha torreyana
Cryptorhopalum pruddeni
Cycloneda polita
Dalea brachystachya
Danthonia intermedia
Datura stramonium
Dermatocarpon reticulatum
Dermatocarpon tenue
Descurainia brevisiliqua
Diadasia diminuta
Dichanthelium lanuginosum
Diplotaxis conformis
Discus whitneyi
Dissosteira longipennis
Drasteria perplexa
Echinosteliopsis oligospora
Ellipes minuta
Enallagma praevarum
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