genus cecropia genus cedrela genus cedrus genus ceiba genus celastrus genus celosia genus celtis genus cenchrus genus centaurea genus centaurium genus centranthus genus centrocercus genus centrolobium genus centropomus genus centropristis genus centropus genus centrosema genus centunculus genus cephalanthera genus cephalopterus genus cephalotaxus genus cephalotus genus cepphus genus cerapteryx genus cerastes genus cerastium genus ceratitis genus ceratodus genus ceratonia genus ceratopetalum genus ceratophyllum genus ceratopogon genus ceratopteris genus ceratosaurus genus ceratostomella genus ceratotherium genus ceratozamia genus cercidiphyllum genus cercidium genus cercis genus cercocebus genus cercopithecus genus cercospora genus cercosporella genus cereus genus ceroxylon genus certhia genus cervus genus ceryle genus cestrum genus cestum genus ceterach genus cetonia genus cetorhinus genus cetraria genus chaenactis genus chaenomeles genus chaenopsis genus chaetodipterus genus chaetodon genus chalcis genus chalcostigma genus chamaea genus chamaecrista genus chamaecyparis genus chamaecytisus genus chamaedaphne genus chamaeleo genus chamaeleon genus chamaemelum genus chara genus charadrius genus charina genus charronia genus chateura genus chauna genus cheilanthes genus cheiranthus genus chelidonium 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 genus cnidoscolus genus coccothraustes genus cocculus genus coccus genus coccyzus genus cochlearia genus cochlearius genus cocos genus codariocalyx genus codiaeum genus coeloglossum genus coelogyne genus coelophysis genus coereba genus coffea genus cola genus colaptes genus colchicum genus coleonyx genus coleus