Cacatua galerita (order Psittaciformes)

Caerostris extrusa (order Araneae)

Cakile maritima (order Brassicales)

Calamus cf. scipionum (order Arecales)

Calamus sp. (order Arecales)

Calamintha nepeta (order Lamiales)

Calappa granulata (order Decapoda)

Calathus circumseptus (order Coleoptera)

Calendula arvensis (order Asterales)

Calendula officinalis (order Asterales)

Calla palustris (order Alismatales)

Calladium unicolor (synonymous, order Coleoptera)

Callicarpa americana (order Lamiales)

Callicoma serratifolia (order Oxalidales)

Calliergonella cuspidata (order Hypnales)

Callinectes sapidus (order Decapoda)

Calliostoma rugosum (order Vetigastropoda)

Calliostoma zizyphinus (order Vetigastropoda)

Calliphora vicina (order Diptera)

Calliphora vomitoria (order Diptera)

Calliptamus barbarus (order Orthoptera)

Calliptamus plebeius (order Orthoptera)

Callista calceola (synonymous, order Asparagales)

Callista moschata (synonymous, order Asparagales)

Callistemon rigidus (order Myrtales)

Callistosporium luteo-olivaceum (order Agaricales)

Callistosporium xanthophyllum (synonymous, order Agaricales)

Calliteara pudibunda (order Lepidoptera)

Callitriche stagnalis (order Lamiales)

Callitris glaucophylla (order Pinales)

Callitris gracilis (synonymous, order Pinales)

Callitris preisii (order Pinales)

Callitris hugelii (synonymous order Pinales)

Callitropsis arizonica (order Pinales)

Callitropsis lusitanica (order Pinales)

Callitropsis macrocarpa (order Pinales)

Callitropsis nootkatensis (order Pinales)

Calluna vulgaris (order Ericales)

Caloboletus radicans (order Boletales)

Calocedrus decurrens (order Pinales)

Calochlaena villosa (order Cyatheales)

Calogaya decipiens (order Teloschistales)

Calogaya saxicola (order Teloschistales)

Calogaya schistidii (order Teloschistales)

aff Calonectria pauciramosa (order Hypocreales)

cf. Calopadia imshaugii (order Lecanorales)

Caloplaca aractina (order Teloschistales)

Caloplaca aurantia (synonymous, order Teloschistales)

Caloplaca cerina (order Teloschistales)

Caloplaca cerinelloides (synonymous, order Teloschistales)

Caloplaca citrina (synonymous, order Teloschistales)

Caloplaca decipiens (synonymous, order Teloschistales)

Caloplaca elegans (synonymous, order Teloschistales)

Caloplaca ferrarii (synonymous, order Teloschistales)

Caloplaca flavorubescens (synonymous, order Teloschistales)

Caloplaca furax (order Teloschistales)

Caloplaca herbidella (synonymous, order Teloschistales)

Caloplaca hungarica (synonymous, order Teloschistales)

Caloplaca limitosa (order Teloschistales)

Caloplaca lucifuga (order Teloschistales)

Caloplaca navasiana (synonymous, order Teloschistales)

Caloplaca obscurella (order Teloschistales)

Caloplaca phlogina (synonymous, order Teloschistales)

Caloplaca sarcopisioides (synonymous, order Teloschistales)

Caloplaca saxicola (synonymous, order Teloschistales)

Caloplaca schistidii (synonymous, order Teloschistales)

Caloplaca teicholyta (synonymous, order Teloschistales)

Caloplaca thallincola (synonymous, order Teloschistales)

Calopteryx haemorrhoidalis (order Odonata)

Caltha palustris (order Ranunculales)

Calvatia gigantea (order Agaricales)

Calvatia utriformis (synonymous, order Agaricales)

Calvia decemguttata (order Coleoptera)

Calycanthus chinensis (synonymous, order Laurales)

Calycanthus fertilis (synonymous, order Laurales)

Calycanthus floridus (order Laurales)

Calypogeia integristipula (order Jungermanniales)

Cambarellus diminutus (order Decapoda)

Cambropallas telesto (order Redlichiida)

Camellia japonica (order Ericales)

Camellia saluenensis (order Ericales)

Camellia sasanqua (order Ericales)

Campaea margaritaria (order Lepidoptera)

Campanula erinus (order Asterales)

Campanula filicaulis (order Asterales)

Campanula rapunculus (order Asterales)

Campanula rotundifolia (order Asterales)

Campanula trachelium (order Asterales)

Camphorosma monspeliaca (order Caryophyllales)

Campodea aff arrabidae (order Rhabdura)

Campodea silvestrii (order Rhabdura)

Camptopus lateralis (order Hemiptera)

Campylanthus salsoloides (order Lamiales)

Campylium protensum (order Hypnales)

Campylopus introflexus (order Dicranales)

Campylospermum sp. nov. (order Malpighiales)

Campylostelium pitardii (order Grimmiales)

Canarina canariensis (order Asterales)

Canarium labiatum (order Sorbeoconcha)

Canarium urceus (order Sorbeoconcha)

Cancer pagurus (order Decapoda)

Candelariella medians (order Candelariales)

Candelariella reflexa (order Candelariales)

Candelariella subdeflexa (order Candelariales)

Candelariella xanthostigma (order Candelariales)

Cannabis sativa (order Rosales)

Cancellaria cancellata (synonymous, order Sorbeoconcha)

Canis familiaris (synonymous, order Carnivora)

Canis lupus (order Carnivora)

Cannomois robusta (order Poales)

Cannomois robustus (synonymous, order Poales)

Cannomois saundersiae (synonymous, order Poales)

Canoparmelia texana (order Lecanorales)

Cantareus aspersus (synonymous, order Pulmonata)

Cantharellus cibarius (order Cantharellales)

Cantharellus cinereus (synonymous, order Cantharellales)

Cantharis fusca (order Coleoptera)

Cantharis livida (order Coleoptera)

Cantharocybe gruberi (order Agaricales)

Capparis spinosa (order Brassicales)

Capparis zoharyi (order Brassicales)

Capsella bursa-pastoris (order Brassicales)

Capulus ungaricus (order Sorbeoconcha)

Capurodendron ainae (order Ericales)

Capurodendron ambanizanense (order Ericales)

Capurodendron andrafiamenae (order Ericales)

Capurodendron androyense (order Ericales)

Capurodendron ankaranense (order Ericales)

Capurodendron antilahimenae (order Ericales)

Capurodendron antongiliense (order Ericales)

Capurodendron apollonioides (order Ericales)

Capurodendron aubrevillei (order Ericales)

Capurodendron bakeri (order Ericales)

Capurodendron birkinshawii (order Ericales)

Capurodendron christeae (order Ericales)

Capurodendron costatum (order Ericales)

Capurodendron delphinense (order Ericales)

Capurodendron gracilifolium (order Ericales)

Capurodendron greveanum (order Ericales)

Capurodendron ludiifolium (order Ericales)

Capurodendron madagascariense (order Ericales)

Capurodendron mandrarense (order Ericales)

Capurodendron microphyllum (order Ericales)

Capurodendron mikeorum (order Ericales)

Capurodendron naciriae (order Ericales)

Capurodendron namorokense (order Ericales)

Capurodendron nanophyllum (order Ericales)

Capurodendron nataliae (order Ericales)

Capurodendron nodosum (order Ericales)

Capurodendron oblongifolium (order Ericales)

Capurodendron perrieri (order Ericales)

Capurodendron pervillei (order Ericales)

Capurodendron pseudoterminalia (order Ericales)

Capurodendron randrianaivoi (order Ericales)

Capurodendron rubrocostatum (order Ericales)

Capurodendron rufescens (order Ericales)

Capurodendron sahafariense (order Ericales)

Capurodendron sakalavum (order Ericales)

Capurodendron sakarivorum (order Ericales)

Capurodendron schatzii (order Ericales)

Capurodendron suarezense (order Ericales)

Capurodendron tampinense (order Ericales)

Capurodendron terminalioides (order Ericales)

Carabus convexus (order Coleoptera)

Carabus lineatus (order Coleoptera)

Carabus pseudomonticola (order Coleoptera)

Carabus violaceus (order Coleoptera)

Caralluma europaea (order Gentianales)

Carbonea vitellinaria (order Lecanorales)

Carcharhinus egertoni (order Carcharhiniformes)

Cardamine heptaphylla (order Brassicales)

Cardamine hirsuta (order Brassicales)

Cardamine pratensis (order Brassicales)

Cardaria draba (order Brassicales)

Cardites bicolor  (order Veneroida)

Carduelis cannabina  (order Passeriformes)

Carduelis carduelis  (order Passeriformes)

Carduelis chloris (order Passeriformes)

Carduelis spinus  (order Passeriformes)

Carduus carpetanus (order Asterales)

Carduus keniensis (order Asterales)

Carex acutiformis (order Poales)

Carex curvula (order Poales)

Carex digitata (order Poales)

Carex elata (order Poales)

Carex flacca (order Poales)

Carex grayi (order Poales)

Carex halleriana (order Poales)

Carex humilis (order Poales)

Carex montana (order Poales)

Carex muricata (order Poales)

Carex panicea (order Poales)

Carex remota (order Poales)

Carex rostrata (order Poales)

Carex sylvatica (order Poales)

Caridina mariae (order Decapoda)

Carlina corymbosa (order Asterales)

Carlina curetum (synonymous, order Asterales)

Carlina macrophylla (order Asterales)

Caroxylon incanescens (order Caryophyllales)

Carpinus betulus (order Fagales)

Carpobrotus acinaciformis (order Caryophyllales)

Carpobrotus edulis (order Caryophyllales)

Carpocoris fuscispinus (order Hemiptera)

Carpocoris mediterraneus (synonymous, order Hemiptera)

Carpocoris purpureipennis (order Hemiptera)

Carrichtera annua (order Brassicales)

Carterus damma (order Coleoptera)

Carthamus tinctorium (order Asterales)

Carum verticillatum (order Apiales)

Carya myristiciformis (order Fagales)

Caryota maxima (order Arecales)

Caryota mitis (order Arecales)

Caryota no (order Arecales)

Casearia nigrescens (order Malpighiales)

Cassia didymobotrya (synonymous, order Fabales)

Cassia fistula (order Fabales)

Cassia javanica (order Fabales)

Cassidaria echinophora (synonymous, order Sorbeoconcha)

Castanea sativa (order Fagales)

Castela erecta (synonymous, order Sapindales)

Castela tortuosa (order Sapindales)

Casuarina cunninghamiana (order Fagales)

Casuarina equisetifolia (order Fagales)

Catapyrenium pilosellum (synonymous, order Verrucariales)

Catapyrenium rufescens (synonymous, order Verrucariales)

Catapyrenium squamulosum (synonymous, order Verrucariales)

Catarhoe basochesiata (order Lepidoptera)

Cataspilota lolodorfana (order Mantodea)

Catharanthus lanceus (order Gentianales)

Catillaria chalybeia (order Lecanorales)

Catocala conversa (order Lepidoptera)

Catocala nymphagoga (order Lepidoptera)

Caulerpa ashmeadii (order Bryopsidales)

Caulerpa cupressoides (order Bryopsidales)

Cebrio gypsicola (order Coleoptera)

Cebrio superbus (order Coleoptera)

Cecidophyes galii (order Trombidiformes)

Cedrus atlantica (order Pinales)

Cedrus brevifolia (order Pinales)

Cedrus deodara (order Pinales)

Cedrus libani (order Pinales)

Ceiba speciosa (order Malvales)

Celastrina argiolus (order Lepidoptera)

Celtis pallida (order Rosales)

Celtis spinosa (synonymous, order Rosales)

Celtis tala (order Rosales)

Centaurea alba (order Asterales)

Centaurea aspera (order Asterales)

Centaurea calcitrapa (order Asterales)

Centaurea conifera (synonymous, order Asterales)

Centaurea cyanus (order Asterales)

Centaurea hyssopifolia (order Asterales)

Centaurea melitensis (order Asterales)

Centaurea paui (order Asterales)

Centaurea salmantica (synonymous, order Asterales)

Centaurea seridis (order Asterales)

Centaurium linariifolium (synonymous, order Gentianales)

Centaurium quadrifolium (order Gentianales)

Centranthus calcitrapa (order Dipsacales)

Centrocoris variegatus (order Hemiptera)

Cepaea nemoralis (order Pulmonata)

Cephalanthera rubra (order Asparagales)

Cephalochrysa cf australis (order Diptera)

Cephalotaxus fortunei (order Pinales)

Cephalotaxus harringtonia (order Pinales)

Cephaloziella baumgartneri (order Jungermanniales)

Cerambyx cerdo (order Coleoptera)

Cerambyx miles (order Coleoptera)

Cerastium glomeratum (order Caryophyllales)

Cerastium stenopetalum (order Caryophyllales)

Cerastium uniflorum (order Caryophyllales)

Ceratarges armatus (order Lichida)

Ceratiomyxa fruticulosa (order Ceratiomyxida)

Ceratitis capitata (order Diptera)

Ceratocystis ulmi (order Ophiostomatales)

Ceratodon purpureus (order Dicranales)

Ceratonia siliqua (order Fabales)

Ceratopetalum apetalum (order Oxalidales)

Ceratophyllum demersum (order Ceratophyllales)

Ceratophyus hoffmannseggi (order Coleoptera)

Ceratozamia latifolia (order Cycadales)

Ceratozamia mexicana (order Cycadales)

Ceratozamia microstrobila (synonymous, order Cycadales)

Cercidium texanum (order Fabales)

Cercopis intermedia (order Hemiptera)

Cercopis vulnerata (order Hemiptera)

Cercospora neriella (synonymous, orden Capnodiales)

Cereus hildmannianus (order Caryophyllales)

Ceriops tagal (order Malpighiales)

Ceropegia dichotoma (order Gentianales)

Ceropegia hians (synonymous, order Gentianales)

Ceropegia krainzii  (synonymous, order Gentianales)

Cerotelium fici (order Pucciniales)

Cerrena unicolor (order Polyporales)

Certallum ebulinum (order Coleoptera)

Cervus elaphus (order Cetartiodactyla)

Cestrum nocturnum (order Solanales)

Cetonia carthami (order Coleoptera)

Cetraria aculeata (order Lecanorales)

Cetraria chlorophylla (synonymous, order Lecanorales)

Cetraria cucullata (synonymous, order Lecanorales)

Cetraria islandica (order Lecanorales)

Cetraria juniperina (order Lecanorales)

Cetraria muricata (order Lecanorales)

Cetraria nivalis (synonymous, order Lecanorales)

Cetraria pinastri (order Lecanorales)

Cetraria sepincola (order Lecanorales)

Chaenorrhinum origanifolium (order Lamiales)

Chaetocalathus craterellus (order Agaricales)

Chalcophora mariana (order Coleoptera)

Chamaecyparis lawsoniana (order Pinales)

Chamaecyparis nootkatensis (synonymous, order Pinales)

Chamaecyparus obtusa (order Pinales)

Chamaecyparis pisifera (order Pinales)

Chamaeleo chamaeleon (order Squamata)

Chaetomorpha linum (order Cladophorales)

Chalcolestes viridis (order Odonata)

Chamaedorea costaricana (order Arecales)

Chamaedorea metallica (order Arecales)

Chamaedorea microspadix (order Arecales)

Chamaenerion fleischeri (order Myrtales)

Chambeyronia macrocarpa (order Arecales)

Chara corallina (order Charales)

Chara fragilis (order Charales)

Chara hispida (order Charales)

Chara vulgaris (order Charales)

Cheiracanthium canariense (order Araneae)

Cheirolophus teydis (order Asterales)

Cheirurus gibbus (synonymous, order Phacopida)

Chelidonium majus (order Ranunculales)

Chelidura pyrenaica (order Dermaptera)

Chelon labrosus (order Mugiliformes)

Chenonetta jubata (order Anseriformes)

Chicorium spinosum (order Asterales)

Chiloscyphus polyanthos (order Jungermanniales)

Chimonanthus praecox (order Laurales)

Chlaenius spoliatus (order Coleoptera)

Chlaenius vestitus (order Coleoptera)

Chlamydomonas nivalis (order Chlamydomonadales)

Chlamys crassicostata (synonymous, order Ostreoida)

Chlamys macrotis (order Ostreoida)

Chloranthus erectus (order Chloranthales)

Chlorociboria aeruginascens (order Helotiales)

Chlorochroa reuteriana (order Hemiptera)

Chlorohydra viridissima (synonymous, order Anthomedusae)

Chlorophyllum brunneum (order Agaricales)

Chlorophyllum rhacodes (order Agaricales)

Chloroscypha alutipes (order Heliotales)

Choerades femorata (order Diptera)

Choiromyces magnusii (order Pezizales)

Choisya ternata (order Sapindales)

Chondrosia reniformis (order Chondrosiida)

Chondrostoma willkommii (synonymous, order Cypriniformes)

Chorisia speciosa (synonymous, order Malvales)

Chorthippus biguttulus (order Orthoptera)

Chorthippus binotatus (order Orthoptera)

Chorthippus parallelus (order Orthoptera)

Chroogomphus fulmineus (order Boletales)

Chroogomphus rutilus (order Boletales)

Chrysalidocarpus bejofo (order Arecales)

Chrysalidocarpus decaryi (order Arecales)

Chrysalidocarpus decipiens (order Arecales)

Chrysalidocarpus lastellianus (order Arecales)

Chrysalidocarpus lutescens (order Arecales)

Chrysalidocarpus tokoravina (order Arecales)

Chrysalidocarpus sp. nov. (order Arecales)

Chrysanthemum coronarium (order Asterales)

Chrysiridia madagascariensis (synonymous, order Lepidoptera)

Chrysiridia rhipheus (order Lepidoptera)

Chrysobalanus icaco (order Malpighiales)

Chrysocharis gemma (order Hymenoptera)

Chrysochraon brachyptera (synonymous, order Orthoptera)

Chrysodeixis chalcites (order Lepidoptera)

Chrysolepis chrysophylla (order Fagales)

Chrysolina americana (order Coleoptera)

Chrysolina bankii (order Coleoptera)

Chrysolina diluta (order Coleoptera)

Chrysolina fastuosa (order Coleoptera)

Chrysolina herbacea (order Coleoptera)

Chrysolina kuesteri (order Coleoptera)

Chrysomela americana (synonymous, order Coleoptera)

Chrysomela populi (order Coleoptera)

Chrysopa perla (order Neuroptera)

Chrysophyllum ambrense (synonymous, order Ericales)

Chrysophyllum cainito (order Ericales)

Chrysophyllum fenerivense (synonymous, order Ericales)

Chrysops relictus (order Diptera)

Chrysosplenium alternifolium (order Saxifragales)

Chrysothrix candelaris (order Arthoniales)

Chrysothrix chlorina (order Arthoniales)

Chrysothrix xanthina (order Arthoniales)

Cibotium schiedei (order Cyatheales)

Cicada orni (order Hemiptera)

Cicadella viridis (order Hemiptera)

Cicadetta picta (order Hemiptera)

Cinnamomum camphora (order Laurales)

Cinnamosma macrocarpa (order Canellales)

Cinara piceae (order Hemiptera)

Cionus hortulanus (order Coleoptera)

Circaea lutetiana (order Myrtales)

Circaetus gallicus (order Accipitriformes)

Cirsium erisithales (order Asterales)

Cistanche phelypaea (order Lamiales)

Cistanche tinctoria (synonymous, order Lamiales)

Cistus ladanifer (order Malvales)

Cistus laurifolius (order Malvales)

Cistus monspeliensis (order Malvales)

Citrullus colocynthis (order Cucurbitales)

Citrus x sinensis (order Sapindales)

Cladia aggregata (order Lecanorales)

Cladina mitis (synonymous, order Lecanorales)

Cladocora caespitosa (order Scleractinia)

Cladonia arbuscula (order Lecanorales)

Cladonia bellidiflora (order Lecanorales)

Cladonia borbonica (order Lecanorales)

Cladonia chlorophaea (order Lecanorales)

Cladonia coccifera (order Lecanorales)

Cladonia confusa (order Lecanorales)

Cladonia convoluta (synonymous, order Lecanorales)

Cladonia corniculata (order Lecanorales)

Cladonia didyma (order Lecanorales)

Cladonia diplotypa (order Lecanorales)

Cladonia fimbriata (order Lecanorales)

Cladonia florkeana (order Lecanorales)

Cladonia foliacea (order Lecanorales)

Cladonia gracilis (order Lecanorales)

Cladonia cf. indica (order Lecanorales)

Cladonia krempelhuberi (order Lecanorales)

Cladonia macilenta (order Lecanorales)

Cladonia mitis (order Lecanorales)

Cladonia pachyclados (order Lecanorales)

Cladonia pocillum (order Lecanorales)

Cladonia poeciloclada (synonymous, order Lecanorales)

Cladonia polydactyla (order Lecanorales)

Cladonia pyxidata (order Lecanorales)

Cladonia rangiferina (order Lecanorales)

Cladonia rangiformis (order Lecanorales)

Cladonia squamosa (order Lecanorales)

Cladonia subcervicornis (order Lecanorales)

Cladonia uncialis (order Lecanorales)

Cladophora dalmatica (order Cladophorales)

Cladophora globulina (order Cladophorales)

Clathrina coriacea (order Clathrinida)

Clathrus archeri (synonymous, order Phallales)

Clavaria acuta (synonymous, order Agaricales)

Clavaria asterospora (synonymous, order Agaricales)

Clavaria falcata (order Agaricales)

Clavariadelphus pistillaris (order Gomphales)

aff. Clavator obtusatus (order Pulmonata)

Clavulina coralloides (synonymous, order Cantharellales)

Clavulina cristata (order Cantharellales)

Clavulina rugosa (order Cantharellales)

Cleistocactus strausii (order Caryophyllales)

Cleistocactus tupeziensis (order Caryophyllales)

Clematis armandii (order Ranunculales)

Clematis brachiata (order Ranunculales)

Clematis flammula (order Ranunculales)

Clematis vitalba (order Ranunculales)

Cleome ciliata (synonymous, order Brassicales)

Cleome rutidosperma (order Brassicales)

Cleyera japonica (order Ericales)

Cliona celata (order Hadromerida)

Clitocybe fragans (order Agaricales)

Clitocybe odora (order Agaricales)

Clitocybe squamulosa (order Agaricales)

Clitocybe sp. 1 (order Agaricales)

Clusia grandiflora (order Malpighiales)

Clusia rosea (order Malpighiales)

Clytra quadripunctata (order Coleoptera)

Coccinella miranda (order Coleoptera)

Coccinella septempunctata (order Coleoptera)

Coccocarpia erythroxyli (order Peltigerales)

Coccocarpia palmicola (order Peltigerales)

Coccoloba peltata (order Caryophyllales)

Coccoloba pubescens (order Caryophyllales)

Coccoloba uvifera (order Caryophyllales)

Coccothrinax crinita (synonymous, order Arecales)

Coccothrinax radiata (synonymous, order Arecales)

Cocculus orbiculatus (order Ranunculales)

Cochlicella acuta (order Pulmonata)

Cochlicella barbara (order Pulmonata)

Cochlicella conoidea (order Pulmonata)

Cochlus fanel (synonymous, order Sorbeoconcha)

Cocos nucifera (synonymous, order Arecales)

Codakia orbicularis (order Veneroida)

Codium bursa  (order Bryopsidales)

Codium fragile  (order Bryopsidales)

Coelogyne glumacea (order Asparagales)

Coenogonium interplexum (order Ostropales)

Coenosia mollicula  (order Diptera)

Coenosia tigrina  (order Diptera)

Coix agrestis (synonymous, order Poales)

Coix arundinacea (synonymous, order Poales)

Coix exaltata (synonymous, order Poales)

Coix lacryma (synonymous, order Poales)

Coix lacryma-jobi (order Poales)

Colchicum filifolium (order Liliales)

Colchicum lusitanum (order Liliales)

Colchicum montanum (order Liliales)

Colias alfacariensis (order Lepidotera)

Colias crocea (order Lepidotera)

Colias seraptensis (synonymous, order Lepidotera)

Collema cristatum (order Peltigerales)

Collema polycarpon (order Peltigerales)

Collema rysoleum (order Peltigerales)

Collema undulatum (order Peltigerales)

Colletia paradoxa (order Rosales)

Collita griseola (order Lepidotera)

Collybia dryophila (synonymous)

Colobanthus quitensis (order Caryophyllales)

Colocasia esculenta (order Alismatales)

Colophospermum mopane (order Fabales)

Colpocoryphe grandis (order Phacopida)

Coluber hippocrepis (synonymous, order Squamata)

Columba oenas (order Columbiformes)

Columba palumbus (order Columbiformes)

Colutea orientalis (order Fabales)

Comarostaphylis polifolia (order Ericales)

Coniocleonus excoriatus (order Coleoptera)

Conocarpus erectus (order Myrtales)

Conocephalum conicum (order Marchantiales)

Conocybe apala (order Agaricales)

Conocybe lactea (synonymous, order Agaricales)

Conopholis alpina (order Lamiales)

Conophytum bilobum (order Caryophyllales)

Conophytum truncatum (order Caryophyllales)

Conus quercinus (order Sorbeoconcha)

Conus virgo (order Sorbeoconcha)

Convallaria majalis (order Asparagales)

Convolutriloba retrogemma (order Acoela)

Convolvulus althaeoides (order Solanales)

Convolvulus floridus (order Solanales)

Convolvulus lanuginosus (order Solanales)

Convolvulus lineatus (order Solanales)

Conyza canadensis (order Asterales)

Conyza sumatrensis (order Asterales)

Cookeina speciosa (order Pezizales)

Cookeina tricholoma (order Pezizales)

Copernicia prunifera (order Arecales)

Cophopodisma pyrenaea (order Orthoptera)

Coprinellus cf. sclerocystidiosus (order Agaricales)

Coprinopsis bellula (order Agaricales)

Coprinopsis gr. lagopus (order Agaricales)

Coprinopsis nivea (order Agaricales)

Coprinus comatus (order Agaricales)

Coprinus niveus (synonymous, order Agaricales)

Coprinus sclerocystidiosus (synonymous, order Agaricales)

Copris hispanus (order Coleoptera)

Coprosma repens (order Gentianales)

Coptosoma scutellatum (order Hemiptera)

Cora barbulata (order Agaricales)

Corallina elongata (order Corallinales)

Coranus niger (order Hemiptera)

Corbicula fluminea (order Veneroida)

Cordia boissieri (order Boraginales)

Cordia scabra (order Boraginales)

Coreus marginatus (order Hemiptera)

Coriaria myrtifolia (order Cucurbitales)

Coriolopsis gallica  (order Polyporales)

Coriomeris hirticornis (order Hemiptera)

Coris monspeliensis (order Ericales)

Corizus hyoscyami (order Hemiptera)

Cornu aspersum (order Pulmonata)

Cornus capitata (order Cornales)

Cornus hemsleyi (order Cornales)

Cornus kousa (order Cornales)

Cornus mas (order Cornales)

Cornus pumila (order Cornales)

Cornus sanguinea (order Cornales)

Corokia cotoneaster (order Asterales)

Coronilla juncea (order Fabales)

Coronilla scorpioides (order Fabales)

Coronopus didymus (order Brassicales)

Cortaderia seollana (order Poales)

Corticifraga peltigerae (order Lecanorales)

Cortinarius salor (order Ericales)

Corvus monedula (order Passeriformes)

Corydalis cava (order Ranunculales)

Corylopsis glabra (order Saxifragales)

Corylus avellana (order Fagales)

Corypha lecomtei (order Arecales)

Corypha utan (order Arecales)

Coscinasterias tenuispina (order Forcipulatida)

Coscinocladium gaditanum (order Teloschistales)

Coscinocladium occidentale (synonymous, order Teloschistales)

Cosmarium curtum (synonymous, order Desmidiales)

Cotyledon orbiculata (order Saxifragales)

Cradoscrupocellaria reptans (order Cheilostomatida)

Crambe crambe (order Poecilosclerida)

Crambe scaberrima (order Brassicales)

Crambe strigosa (order Brassicales)

Crassula deceptor (order Saxifragales)

Crassula expansa (order Saxifragales)

Crassula falcata (synonymous, order Saxifragales)

Crassula lycopodioides (synonymous, order Saxifragales)

Crassula muscosa (order Saxifragales)

Crassula ovata (order Saxifragales)

Crassula perfoliata (order Saxifragales)

Crassula plegmatoides (order Saxifragales)

Crassula rupestris (order Saxifragales)

Crassula tillaea (order Saxifragales)

Crataegus granatensis (order Rosales)

Crataegus laevigata (order Rosales)

Crataegus monogyna (order Rosales)

Crataegus oxycantha (synonymous, order Rosales)

Cratena peregrina (order Opisthobranchia)

Craterellus cinereus (order Cantharellales)

Craterellus cornucopioides (order Cantharellales)

Craterellus tubaeformis (order Cantharellales)

Craterostigma pumilum (order Lamiales)

Cratoneuron commutatum (synonymous, order Hypnales)

Cratoneuron filicinum (order Hypnales)

Crepidula fornicata (order Sorbeoconcha)

Crepis vesicaria (order Asterales)

Crescentia alata (order Lamiales)

Cribroleptura stragulata (order Coleoptera)

Crinipellis scabella (order Agaricales)

Crinipellis scabellus (synonymous, order Agaricales)

Crinipellis stipitarius (synonymous, order Agaricales)

Crinipellis subtomentosa (order Agaricales)

Crinum cf. asiaticum (order Asparagales)

Crinum jagus (order Asparagales)

Crithmum maritimum (order Apiales)

Crocidura russula (order Soricomorpha)

Crocodia aurata (synonymous, order Peltigerales)

Crocothemis erythraea (order Odonata)

Crocus albiflorus (synonymous, order Asparagales)

Crocus vernus (order Asparagales)

Crossidium squamiferum (order Pottiales)

Crotalaria grandibracteata (order Fabales)

Crotalocephalina gibbus (synonymous, order Phacopida)

Crotalocephalus gibbus (order Phacopida)

Croton macrostachyus (order Malpighiales)

Crucianella angustifolia (order Gentianales)

Crucianella maritima (order Gentianales)

Cryphia muralis (order Lepidoptera)

Cryptocephallus bahilloi (order Coleoptera)

Cryptocephallus crassus (order Coleoptera)

Cryptocephalus octoguttatus (order Coleoptera)

Cryptomyzus ribis (order Hemiptera)

Cryptomeria japonica (order Pinales)

Cryptomphalus aspersus (synonymous, order Pulmonata)

Ctenicera pectiniformis (order Coleoptera)

Ctenidium moluscum (order Hypnales)

Ctenitis glabella (synonymous, order Polypodiales)

Ctenolepisma lineata (order Zygentoma)

Cudonia circinans (order Rhytismatales)

Culcita macrocarpa (order Cyatheales)

Culcita villosa (synonymous, order Cyatheales)

Culcitium nivale (order Asterales)

Culcitium nivalis (synonymous, order Asterales)

Cucubalus baccifer (order Caryophyllales)

Cucurbita maxima (order Cucurbitales)

Culex sp (order Diptera)

Cunninghamia lanceolata (order Pinales)

Cuphea hyssopifolia (order Myrtales)

Cupressus arizonica (synonymous, order Pinales)

Cupressus funebris (order Pinales)

Cupressus glabra (synonymous, order Pinales)

Cupressus lusitanica (synonymous, order Pinales)

Cupressus macrocarpa (synonymous, order Pinales)

Cupressus sempervirens (order Pinales)

Cupressus torulosa (order Pinales)

Curio articulatus (order Asterales)

Cuscuta approximata (order Solanales)

Cuscuta campestris (order Solanales)

Cutandia maritima (order Poales)

Cyanea capillata (order Semaeostomeae)

Cyanistes caeruleus (order Passeriformes)

Cyathea arborea (order Cyatheales)

Cyathea australis (synonymous, order Cyatheales)

Cyathea brownii (synonymous, order Cyatheales)

Cyathea cooperi (synonymous, order Cyatheales)

Cyathea dealbata (synonymous, order Cyatheales)

Cyathea manniana (synonymous, order Cyatheales)

Cyathea medullaris (synonymous, order Cyatheales)

Cyathea smithii (synonymous, order Cyatheales)

Cyathus olla (order Agaricales)

Cyathus poeppigii (order Agaricales)

Cyathus striatus (order Agaricales)

Cycas circinalis (order Cycadales)

Cycas edentata (order Cycadales)

Cycas media (order Cycadales)

Cycas micronesica (order Cycadales)

Cycas ophiolitica (order Cycadales)

Cycas littoralis (synonymous, order Cycadales)

Cycas revoluta (order Cycadales)

Cycas rumphii (order Cycadales)

Cycas thouarsii (order Cycadales)

Cyclamen hederifolium (order Ericales)

Cyclamen neapolitanum (synonymous, order Ericales)

Cyclobalanopsis glauca (synonymous, order Fagales)

Cyclocybe cylindracea (order Agaricales)

Cyclophora maderensis (order Lepidoptera)

Cycnium tubulosum (order Lamiales)

Cydalima perspectalis (order Lepidoptera)

Cydnus aterrimus (order Hemiptera)

Cylindrocladium pauciramosum (order: Hypocreales)

Cylindropuntia bigelovii (order Caryophyllales)

Cylindropuntia imbricata (order Caryophyllales)

Cylindropuntia subulata (synonymous, order Caryophyllales)

aff Cymatoceras neckerianum (order Nautilida)

Cymbidium moschatum (synonymous, order Asparagales)

Cymbidium sp (order Asparagales)

Cymbalophora pudica (order Lepidoptera)

Cymodocea nodosa (order Alismatales)

Cynanchum marnierianum (order Gentianales)

Cynara cardunculus (order Asterales)

Cynara scolymus (synonymous, order Asterales)

Cynips quercustifolii (order Hymenoptera)

Cynodon dactylon (order Poales)

Cynoglossum cheirifolium (order Boraginales)

Cynoglossum creticum (order Boraginales)

Cynorkis angustipetala (order Asparagales)

Cynorkis calanthoides (order Asparagales)

Cynorkis flexuosa (order Asparagales)

Cynorkis graminea (order Asparagales)

Cynosurus echinatus (order Poales)

Cyperus capitatus (order Poales)

Cyperus derreilema (order Poales)

Cyperus eragrostis (order Poales)

Cyperus rotundus (order Poales)

Cyphelium notarisii (order Teloschistales)

Cyphomandra betacea (synonymous, order Solanales)

Cyphostemma cirrhosum (order Vitales)

Cyphostemma juttae (order Vitales)

Cyphostemma masukuense (order Vitales)

Cypraea caputserpentis (synonymous, order Sorbeoconcha)

Cypraea lurida (synonymous, order Sorbeoconcha)

Cyprinus carpio (order Cypriniformes)

Cypripedium calceolus (order Asparagales)

Cypripedium formosanum (order Asparagales)

Cyrtauchenius walckenaeri (order Araneae)

Cyrtopodium saintlegerianum (order Asparagales)

Cystopteris fragilis (order Polypodiales)

Cytinus hypocistis (order Malvales)

Cytinus ruber (synonymous, order Malvales)

Cytospora chrysosperma (order Diaporthales)