genus Chelifer
genus Chelone
genus Chelonia
genus Chelydra
genus Chenopodium
genus Chilomastix
genus Chilomeniscus
genus Chilomycterus
genus Chilopsis
genus Chimaera
genus Chimaphila
genus Chimonanthus
genus Chinchilla
genus Chinchona
genus Chiococca
genus Chionanthus
genus Chirocephalus
genus Chironomus
genus Chiton
genus Chlamydera
genus Chlamydia
genus Chlamydomonas
genus Chlamydosaurus
genus Chlamyphorus
genus Chloranthus
genus Chlorella
genus Chloris
genus Chlorococcum
genus Chlorophis
genus Chlorophoneus
genus Chlorophyllum
genus Chloroxylon
genus Chlorura
genus Choeronycteris
genus Choloepus
genus Chondrus
genus Chordeiles
genus Chordospartium
genus Choriotis
genus Chorizagrotis
genus Chorizema
genus Christella
genus Chronoperates
genus Chrysanthemum
genus Chrysaora
genus Chrysemys
genus Chrysobalanus
genus Chrysochloris
genus Chrysolepis
genus Chrysolophus
genus Chrysophrys
genus Chrysophyllum
genus Chrysopsis
genus Chrysosplenium
genus Chrysothamnus
genus Chunga
genus Cibotium
genus Cicada
genus Cicer
genus Cichorium
genus Ciconia
genus Cicuta
genus Cimex
genus Cimicifuga
genus Cinchona
genus Cinclus
genus Cinnamomum
genus Circaea
genus Circaetus
genus Circus
genus Cirsium
genus Cistothorus
genus Cistus
genus Citellus
genus Citharichthys
genus Citroncirus
genus Citrullus
genus Citrus
genus Cladonia
genus Cladorhyncus
genus Cladrastis
genus Clangula
genus Clathrus
genus Claviceps
genus Claytonia
genus Cleistes
genus Clematis
genus Cleome
genus Clethra
genus Clethrionomys
genus Clianthus
genus Cliftonia
genus Clinopodium
genus Clintonia
genus Clitocybe
genus Clitoria
genus Clostridium
genus Clupea
genus Clusia
genus Cnemidophorus
genus Cnicus