| |
| Caa | balansae |
| Caamembeca | insignis, laureola, oxyphylla |
| Cabomba | aquatica, caroliniana, furcata |
| Cabralea | canjerana |
| Cabreraea | andina |
| Caesalpinia | decapetala, pulcherrima |
| Caetangil | chacoensis, paraguariensis |
| Caiophora | aconquijae, arechavaletae, boliviana, canarinoides, cernua, chuquitensis, cirsiifolia, clavata, coronata, deserticola, dumetorum, hibiscifolia, lateritia, mollis, nivalis, pulchella, rosulata ssp. rosulata, rosulata ssp. taraxacoides, sleumerii, spegazzinii, vallegrandensis |
| Cajanus | cajan |
| Cakile | maritima |
| Caladium | bicolor |
| Calandrinia | acaulis, affinis, caespitosa, carolinii, ciliata, colchaguensis, compacta, compressa, fuegiana, graminifolia, jompomae, monandra, nitida, ranunculina, skottsbergii |
| Calceolaria | aiseniana, alba, andina, angustifolia, arachnoidea ssp. nubigena, arachnoidea ssp. arachnoidea, ascendens ssp. ascendens, ascendens ssp. glandulifera, ascendens ssp. pristiphylla, ascendens ssp. exigua, asperula, auriculata, biflora, brunellifolia, caleuana, campanae, cana, cavanillesii, chelidonioides, collina ssp. conferta, collina ssp. subincisa, collina ssp. collina, corymbosa ssp. montana, corymbosa ssp. santiagina, corymbosa ssp. floccosa, corymbosa ssp. corymbosa, corymbosa ssp. mimuloides, corymbosa ssp. tetraphylla, crenatiflora, densifolia ssp. laxa, densifolia ssp. densifolia, dentata ssp. dentata, dentata ssp. cumingiana, dentata ssp. araucana, elatior, filicaulis ssp. luxurians, filicaulis ssp. filicaulis, flavida, flavovirens, fothergillii, georgiana, germainii, glacialis, glandulosa ssp. alicahuensis, glandulosa ssp. glandulosa, hypericina, inamoena, integrifolia, jujuyensis, lagunae-blancae, lanigera, latifolia, lepida, lepidota, meyeniana ssp. cheiranthoides, meyeniana ssp. nahuelbutae, meyeniana ssp. meyeniana, meyeniana ssp. glabrata, morisii, nitida, nudicaulis, pallida, paposana, paralia, parviflora, parvifolia, pennellii, petioalaris, philippii, picta, pinifolia, pinnata, plectranthifolia, poikilanthes, polifolia, polyclada, polyrrhiza, purpurea, rinconada, rivularis, rubiginosa, ruiz-leali, santolinoides, schickendantziana, segethii, spathulata, stellariifolia, talcana, tenella, teucrioides, thyrsiflora, tripartita, tucumana, umbellata, undulata, uniflora, valdiviana ssp. valdiviana, valdiviana ssp. crassifolia, verbascifolia, viscosissima, volckmannii, williamsii |
| Caldcluvia | paniculata |
| Calea | × parviantha, acaulis, asclepiaefolia, bakeriana, cabrerae, chodatii, clematidea, crenata, cuneifolia, cymosa, formosa, gentianoides, hassleriana, hymenolepis, ilienii, kristiniae, longifolia, marginata, mediterranea, monocephala, myrtifolia, parvifolia, phyllolepis, pilosa, pinnatifida, rupicola, triantha, uniflora var. discoidea, uniflora var. uniflora, verticillata |
| Calendula | arvensis, officinalis, tripterocarpa |
| Calibrachoa | atropurpurea, caesia, cordifolia, dusenii, eglandulata, ericifolia, excellens, felipponei, heterophylla, humilis, irgangiana, linoides ssp. linoides, linoides ssp. furcata, longistyla, micrantha, missionica, ovalifolia, paranensis, parviflora, pubescens, pygmaea, scabridula, sellowiana, sendtneriana, serrulata, spathulata, synanthera, thymifolia |
| Callaeum | psilophyllum |
| Calliandra | brevicaulis var. brevicaulis, brevicaulis var. glabra, brevipes, chilensis, dysantha var. opulenta, dysantha var. macrocephala, foliolosa, harrisii, longipes, parviflora, parvifolia, tweedii |
| Callianthe | amoena, bedfordiana, cyclonervosa, darwinii, flava, fluviatilis, jujuiensis, maritima, muelleri-friderici, nivea, pauciflora, picta, rufinerva, sellowiana, striata, sulcatarinensis |
| Callianthemoides | semiverticillata |
| Callisia | monandra, repens |
| Callisthene | castellanosii, hassleri, kuhlmannii |
| Callitriche | albomarginata, antarctica, berteroana, ciliata, concinna, deflexa, heterophylla, heteropoda, lechleri, oblongicarpa, praetermissa, rimosa, stagnalis, terrestris, truncata, turfosa |
| Calolisianthus | amplissimus, pedunculatus, pendulus, speciosus |
| Calopappus | acerosus |
| Calophyllum | brasiliense |
| Calopogonium | caeruleum, sericeum, velutinum |
| Calostigma | imbe |
| Calotheca | brizoides |
| Calotropis | procera |
| Caltha | appendiculata, dionaeifolia, sagittata |
| Calycera | calcitrapa, crassifolia var. spinulosa, crassifolia var. crassifolia, herbacea var. sinuata, herbacea var. herbacea, monocephala, necronensis, pulvinata |
| Calycophyllum | multiflorum |
| Calyculogygas | serrana, uruguayensis |
| Calydorea | alba, amabilis, approximata, azurea, basaltica, bifida, campestris, charruana, crocoides, gardneri, longipes, luteola, minima, minuana, nuda, pallens, riograndensis, undulata, xiphioides |
| Calyptocarpus | biaristatus, vialis |
| Calyptraemalva | catharinensis |
| Calyptrocarya | glomerulata |
| Calystegia | brummittii, tuguriorum |
| Camarea | affinis |
| Cambajuva | ulei |
| Cambessedesia | espora ssp. ilicifolia, espora ssp. espora, hilariana |
| Camelina | alyssum, microcarpa, sativa |
| Camellia | sinensis |
| Camissonia | dentata ssp. littoralis, dentata ssp. dentata |
| Camonea | umbellata |
| Campanula | rapunculoides, rotundifolia |
| Campomanesia | adamantium, aurea, eugenioides, guaviroba, guazumifolia, littoralis, neriiflora, pubescens, reitziana, schlechtendaliana, sessiliflora, thea, xanthocarpa |
| Campovassouria | barbosae, cruciata |
| Campsidium | valdivianum |
| Campsis | radicans |
| Camptosema | rubicundum |
| Campuloclinium | burchellii, chlorolepis, macrocephalum, megacephalum, purpurascens, riedelii, scabrum |
| Campylocentrum | brachycarpum, crassirhizum, densiflorum, grisebachii, hirtellum, iglesiasii, insulare, kuntzei, lansbergii, micranthum, neglectum, organensis, ornithorrhynchum, parahybunense, pauloense, poeppigii, robustum, schlechterianum, sellowii, spannagelii, ulaei |
| Campyloneurum | aglaolepis, angustifolium, angustipaleatum, atlanticum, austrobrasilianum, crispum, decurrens, fallax, lapathifolium, lorentzii, minus, nitidum, repens, rigidum, tucumanense |
| Canastra | aristella |
| Canavalia | bonariensis, brasiliensis, ensiformis, mattogrossensis, picta, piperi, rosea |
| Canna | ascendens, glauca, indica, lineata, paniculata, pedunculata, tandilensis |
| Cantinoa | althaeifolia, heterodon, mutabilis, plectranthoides, stricta |
| Capanemia | adelaidae, brachycion, carinata, micromera, paranaensis, superflua, therezae |
| Caperonia | altissima, buettneriacea, capiibarensis, castaneifolia, cordata, glabrata, linearifolia, palustris, paraguayensis |
| Capparicordis | tweediana |
| Capparidastrum | coimbranum, frondosum, humile |
| Capraria | biflora |
| Capsella | bursa-pastoris |
| Capsicum | baccatum var. pendulum , baccatum var. baccatum, baccatum var. praetermissum, chacoense, eximium, flexuosum, frutescens , recurvatum |
| Cardamine | africana, bonariensis, chenopodiifolia, chilensis, cordata, flexuosa, geraniifolia, glacialis, hirsuta, kruesselii, marginata, rostrata, tenuirostris, tuberosa, variabilis, volckmannii, vulgaris |
| Cardenanthus | venturi |
| Cardionema | burkartii, kurtzii, ramosissimum, rosetta |
| Cardiospermum | corindum var. corindum, grandiflorum, halicacabum var. halicacabum, halicacabum var. microcarpum |
| Carduus | acanthoides, nutans, pycnocephalus, tenuiflorus, thoermeri |
| Carex | acaulis, acutata, aematorhyncha var. corralensis, aematorhyncha var. aematorhyncha, andersonii, andina, aphylla, araucana, argentina, aspericaulis, atropicta, aureolensis, austroamericana, banksii var. banksii, banksii var. gilliesii, banksii var. abbreviata, banksii var. fonkii, berteroniana, boelckeiana, boliviensis, bonariensis var. bonariensis, bonariensis var. glabrescens, brachycalama, bracteosa, brasiliensis, brevicaulis, brongniartii, caduca, camptoglochin, canescens, capitata, catamarcensis, catharinensis, chilensis, chillanensis, crassiflora, darwinii var. darwinii, darwinii var. urolepis, darwinii var. serranoi, decidua, delacosta, distenta, divisa, divulsa, dolichophylla, dusenii, ecuadorica, erinacea, excelsa, fecunda, feddeana, fernandesiana, fernandezensis, firmicaulis, firmula, flacca, fossa, fuscula ssp. fuscula, fuscula f. indecora, fuscula var. pseudextensa, gayana, giovanniana, hamata, herteri, hilairei, hookeri, humahuacaensis, hypoleucos, hypsipedos, inconspicua, kingii, lamprocarpa, lechleriana, leporina, longii ssp. meridionalis, macloviana var. pseudoleporina, macloviana var. thermarum, macloviana var. macloviana, macloviformis, macrorrhiza, macrosolen, macrotrichoides, magellanica, malmei, mandoniana, maritima, melanocystis, meridensis, microglochin, minutissima, molinae, monodynama, moorei, multifaria, multispicata, nebularum, negeri , nelmesiana, niederleiniana, ochrostachya, odontolepis, otrubae, ownbeyi, patagonica, pedicularis, phalaroides var. capitellata, phalaroides var. elongata, phalaroides var. macella, phalaroides ssp. paraguayensis, phalaroides ssp. phalaroides, phalaroides ssp. moesta, phalaroides ssp. crassiflora, phalaroides var. humilis, phleoides, phylloscirpoides, pisanoi, pleioneura, plurinervata, poeppigii, polystachya, polysticha, pseudomacloviana, pumila, pungens, punicola, purpureovaginata, quinquin, reicheana, reichei, rupicola, ruthsatziae, sagei, saltaensis, salticola, scabrida, sellowiana, seticulmis, setifolia, skottsbergiana, sorianoi, sororia ssp. sororia, stuessyi, subandrogyna, subantarctica, subdivulsa, subfuegiana, toroensis, transandina, triangula, trichodes, trifida, turbaria, tweediana, uruguensis, vallis-pulchrae var. vallis-pulchrae, vallis-pulchrae var. barrosiana, vixdentata, werdermannii, wheeleri |
| Carica | chilensis, papaya |
| Cariniana | estrellensis, legalis |
| Carolus | chlorocarpus |
| Carpha | schoenoides |
| Carpobrotus | chilensis, edulis |
| Carthamus | lanatus, tinctorius |
| Carya | illinoinensis |
| Caryocar | brasiliense ssp. brasiliense, brasiliense ssp. intermedium |
| Cascabela | bicornuta |
| Cascaronia | astragalina |
| Casearia | aculeata, americana, arborea, catharinensis, decandra, gossypiosperma, lasiophylla, mariquitensis, obliqua, paranaensis, pauciflora, sylvestris var. sylvestris, sylvestris var. lingua |
| Casimirella | guaranitica |
| Casselia | chamaedryfolia |
| Cassia | fastuosa, ferruginea var. velloziana, ferruginea var. ferruginea, grandis, leptophylla |
| Cassytha | filiformis |
| Castela | coccinea, tweedii |
| Castelnavia | princeps |
| Castilleja | arvensis, attenuata, laciniata, pumila |
| Catabrosa | aquatica, werdermannii |
| Catapodium | rigidum |
| Catasetum | atratum, cernuum var. rodigasianum, cernuum var. cernuun, fimbriatum ssp. fimbriatum, fimbriatum var. morrenianum, fimbriatum ssp. fissum, fimbriatum var. micranthum, fimbriatum var. ornytorrhynchum, micranthum, rohrii, triodon var. guttulatum, triodon var. triodon, trulla |
| Catharanthus | roseus |
| Catopsis | berteroniana, sessiliflora |
| Cattleya | cernua, coccinea, forbesii, guttata, intermedia, loddigesii, lundii, porphyroglossa, purpurata, tigrina |
| Caucalis | platycarpos |
| Cayaponia | alarici, bonariensis, breviloba, cabocla, citrullifolia, diversifolia, espelina, fluminensis, glandulosa, martiana, membranacea, palmata, pilosa, podantha, tayuya, ternata, trifoliolata, trilobata, ulei, villosissima |
| Cecropia | glaziovii, pachystachya |
| Cedrela | angustifolia, balansae, fissilis, odorata, saltensis |
| Ceiba | chodatii, pubiflora var. pubiflora, pubiflora var. glabriflora, samauma, speciosa |
| Celastrus | liebmannii |
| Celosia | argentea f. cristata, argentea f. argentea, corymbifera, grandifolia |
| Celtis | brasiliensis, chichape, clausseniana, ehrenbergiana var. ehrenbergiana, fluminensis, iguanaea, lancifolia, pallida var. pallida, pallida var. discolor, serratissima, spinosa, spinosissima, tala |
| Cenchrus | americanus, chilensis, ciliaris, clandestinus, echinatus, latifolius, longisetus, longispinus, mutilatus, myosuroides, nervosus, pilcomayensis, polystachios, purpureus, rigidus, setaceus, spinifex, tribuloides, tristachyus |
| Cenostigma | macrophyllum, marginatum, pluviosum var. peltophoroides, pluviosum |
| Centaurea | benedicta, cachinalensis, calcitrapa, chilensis var. chilensis, chilensis var. breviloba, cyanus, debeauxii, diffusa, floccosa, iberica, jacea, melitensis, nigra, nigrescens, solstitialis |
| Centaurium | ameghinoi, cachanlahuen, erythraea, littorale, pulchellum, scilloides |
| Centaurodendron | dracaenoides, palmiforme, schilleri |
| Centella | asiatica |
| Centipeda | elatinoides |
| Centranthus | ruber |
| Centratherum | camporum, punctatum |
| Centrolobium | microchaete, tomentosum |
| Centrosema | angustifolium, arenarium, bracteosum, brasilianum, kermesi, pascuorum, plumieri, pubescens, sagittatum, variifolium, virginianum |
| Cephalanthus | glabratus |
| Ceradenia | albidula, maackii, spixiana |
| Cerastium | argentinum, arvense, commersonianum var. commersonianum, dicrotrichum, fontanum ssp. vulgare, glomeratum, humifusum, junceum, kunthii, mollissimum var. mollissimum, montioides, parvum, racemosum, rivulare, rivulariastrum, selloi, semidecandrum, soratense, subspicatum, verecundum |
| Ceratocephala | falcata |
| Ceratophyllum | demersum, muricatum ssp. australe |
| Ceratopteris | pteridoides, thalictroides |
| Ceratosanthes | hilariana, multiloba, palmata |
| Ceratostigma | plumbaginoides |
| Cereus | aethiops, argentinensis, forbesii, haenkeanus, hildmannianus, lanosus, paraguayensis, stenogonus, uruguayanus |
| Cerradicola | boavista, elliptica, eriosematoides, grewiifolia, praeandina |
| Cestrum | auriculatum, axillare, bracteatum, cordatum, corymbosum var. corymbosum, corymbosum var. hirsutum, euanthes, guaraniticum, hassleri, intermedium, kunthii, laevigatum, lorentzianum, mariquitense, parqui, reflexum, schlechtendalii, strictum, strigilatum, tubulosum, velutinum |
| Ceterach | officinarum |
| Chacoa | pseudoprasiifolia |
| Chaerophyllum | andicola, daucoides |
| Chaetanthera | albiflora, australis, callaquiensis, chilensis var. chilensis, chilensis var. tenuifolia, ciliata, depauperata, elegans var. pratensis, elegans var. pulchra, elegans var. elegans, euphrasioides, flabellata, flabellifolia, frayjorgensis, glabrata, glandulosa var. gracilis, glandulosa var. glandulosa, incana, kalinae, lanata, limbata, linearis, microphylla, moenchioides, multicaulis, perpusilla, peruviana, pubescens, ramosissima, renifolia, serrata, spathulifolia, splendens, taltalensis, villosa |
| Chaetogastra | brachyphylla, cerastifolia, cisplatensis, clinopodifolia, cogniauxiana, cordeiroi, crassifolia, cristaensis, debilis, gracilis, hassleri, herbacea, herincquiana, longipilosa, nitida, paratropica, parviflora, riograndensis, rojasii, rupestris, saxicola, sebastianopolitana, simplicicaulis, urbanii, versicolor, violacea |
| Chaetostoma | armatum |
| Chamaecrista | absus, amambaya, arachiphylla, calycioides, campestris, cardiostegia, cathartica, cordistipula, crommyotricha, desvauxii var. desvauxii, desvauxii var. latistipula, desvauxii var. brevipes, desvauxii var. piribebuiensis, desvauxii var. mollissima, flexuosa, glandulosa var. brasiliensis, glandulosa var. glandulosa, gonoclada, hassleri, incana, langsdorffii, nictitans ssp. disadena, nictitans var. ramosa, nictitans var. patellaria, nictitans ssp. brachypoda, nictitans var. paraguariensis, nictitans var. jaliscensis, nictitans var. pilosa, punctata, ramosa var. parvifoliola, ramosa var. ramosa, repens, rotundifolia var. rotundifolia, rotundifolia var. grandiflora, serpens var. grandiflora, serpens var. serpens, trachycarpa, venturiana, vestita, viscosa var. paraguayensis |
| Chamissoa | acuminata, altissima, maximiliani |
| Chaptalia | arechavaletae, cordifolia, exscapa var. chilensis, exscapa var. exscapa, ignota, integerrima, modesta, nutans, piloselloides, similis, sinuata |
| Chascolytrum | lamarckianum, paleapiliferum, scabrum, subaristatum |
| Chasmanthe | floribunda |
| Cheilanthes | andina, arequipensis, buchtienii, glauca, hassleri, hieronymi, hypoleuca, juergensii, micropteris, mollis, obducta, pilosa, poeppigiana, pruinata, sarmientoi, squamosa, volcanensis |
| Cheiloclinium | serratum |
| Chelidonium | majus |
| Chelonanthus | grandiflorus, purpurascens, viridiflorus |
| Chenopodiastrum | murale |
| Chenopodium | album ssp. album, album ssp. borbasii, carnosulum, cordobense, crusoeanum, ficifolium, giganteum, hircinum ssp. catamarcense, hircinum ssp. hircinum, nesodendron, obscurum, pallidicaule, papulosum, petiolare, philippianum, pilcomayense, pratericola, purpurascens, quinoa var. quinoa, quinoa var. melanospermum, ruiz-lealii, sanctae-clarae, sancti-ambrosii, scabricaule, trifurcatum, vulvaria |
| Chersodoma | arequipensis, argentina, candida, glabriuscula, jodopappa |
| Chevreulia | acuminata, diemii, lycopodioides, pusilla, revoluta, sarmentosa |
| Chiliophyllum | densifolium |
| Chiliotrichiopsis | keidelii, ledifolia |
| Chiliotrichum | diffusum, fuegianum |
| Chilocardamum | castellanosii, longistylum, onuridifolium, patagonicum |
| Chiococca | alba |
| Chionanthus | crassifolius, filiformis, trichotomus |
| Chionolaena | capitata |
| Chiropetalum | anisotrichum, argentinense, berterianum var. berterianum, berterianum var. psiladenium, boliviense, canescens, cremnophilum, foliosum, griseum, intermedium, molle, patagonicum, phalacradenium, puntaloberense, ramboi, tricoccum, tricuspidatum |
| Chlidanthus | marginatus, yaviensis |
| Chloraea | alpina, apinnula, barbata, bella, bidentata, biserialis, bletioides, boliviana, castillonii, chrysantha, chrysochlora, cogniauxii, crispa, cristata, cuneata, curicana, cylindrostachya, deflexa, disoides, elegans, galeata, gaudichaudii, gavilu, grandiflora, heteroglossa, lamellata, laxiflora, longipetala, magellanica, membranacea, multiflora, nudilabia, philippii, phoenicea, praecincta, prodigiosa, reticulata, riojana, speciosa, subpandurata, tectata, virescens, viridiflora, volkmannii |
| Chloris | affinis, barbata, castilloniana var. pubescens, castilloniana var. castilloniana, ciliata f. breviseta, ciliata f. ciliata, ciliata f. reptans, gayana, halophila var. humilis, halophila var. halophila, orthonoton, pycnothrix, radiata, sesquiflora, truncata, virgata |
| Chloroleucon | chacoense, foliolosum, tenuiflorum |
| Chloroluma | gonocarpa, viridis |
| Chomelia | brasiliana, hirsuta, obtusa, parviflora, parvifolia, pedunculosa, pohliana, pubescens |
| Chondrilla | juncea |
| Chorispora | tenella |
| Chorizanthe | commissuralis, dasyantha, flavescens, frankenioides, gajardoi, glabrescens, kingii, limariensis, macraei, mieresii, navasiae, novoana, paniculata, peduncularis, rosasii, umbellata, vaginata, virgata, viridis |
| Chresta | plantaginifolia, sphaerocephala |
| Christella | conspersa, dentata, hispidula |
| Christianella | multiglandulosa |
| Chromolaena | adenolepis, amambayensis, angusticeps, arnottiana, ascendens, asperrima, barbacensis, caaguazuensis, callilepis, christieana, connivens, cryptantha, cylindrocephala, elliptica, ferruginea, gentianoides, hirsuta, hookeriana, ivifolia, kleinii, laevigata var. submembranacea, laevigata var. laevigata, laevigata var. arenaria, latisquamulosa, margaritensis, maximiliani, odorata, orbignyana, oxylepis, palmaris, pedunculosa, punctulata, pungens, rhinanthacea, rojasii, squalida, squarrosoramosa, squarrulosa, stachyophylla, tecta, toldensis, tunariensis, ulei, verbenacea, xylorhyza |
| Chrysanthellum | indicum ssp. afroamericanum |
| Chrysanthemoides | monilifera |
| Chrysanthemum | coronarium, segetum |
| Chrysolaena | candelabrum, cognata, cordifolia, cristobaliana, desertorum, dusenii, flexuosa, guaranitica, lithospermifolia, nicolackii, obovata, oligophylla, platensis, propinqua var. propinqua, propinqua var. canescens, sceptrum, simplex, verbascifolia |
| Chrysophyllum | flexuosum, inornatum, marginatum ssp. marginatum, marginatum ssp. tomentosum, paranaense |
| Chrysopogon | zizanioides |
| Chrysosplenium | macranthum, valdivicum |
| Chuquiraga | acanthophylla, atacamensis, aurea, avellanedae, calchaquina, echegarayi, erinacea ssp. hystrix, erinacea ssp. erinacea, kuschelii, longiflora, morenonis, oppositifolia, parviflora, rosulata, ruscifolia, spinosa ssp. australis, spinosa ssp. rotundifolia, straminea, ulicina ssp. ulicina, ulicina ssp. acicularis |
| Chusquea | andina, anelytra, anelytroides, argentina, bambusoides var. minor, bambusoides var. bambusoides, capitata, capituliflora, ciliata, culeou, cumingii, deficiens, egluma, fernandeziana, floribunda, gigantea, gracilis, hatschbachii, ibiramae, juergensii, kleinii, leptophylla, lorentziana, macrostachya, meyeriana, mimosa ssp. mimosa, mimosa ssp. australis, montana f. nigricans, montana f. montana, nudiramea, oligophylla, oxylepis, pinifolia, quila, ramosissima, sellowii, tenella, tenuiglumis, uliginosa, urelytra, valdiviensis, windischii |
| Cicca | chacoensis |
| Cicendia | quadrangularis |
| Cichorium | intybus |
| Cienfuegosia | affinis, argentina, conciliata, drummondii, hasslerana, hispida, integrifolia, lanceolata, saraviae, schulzii, subprostrata, subternata, sulphurea, ulmifolia |
| Cinnagrostis | alba var. breviaristata, alba var. alba, alba var. tricholemma, breviaristata, brevifolia var. expansa, brevifolia var. brevifolia, cabrerae var. cabrerae, cabrerae var. maxima, cabrerae var. trichopoda, cabrerae var. aristulata, calderillensis, chrysophylla, crispa, cryptolopha, curta, curvula, deserticola var. breviaristata, deserticola var. deserticola, fiebrigii, filifolia, heterophylla, hieronymi, lagurus, malamalensis, micrathera, minima, orbignyana, patagonica, polygama var. filifolia, polygama var. polygama, preslii, recta, reitzii, rigescens, rigida, rosea, rupestris, sclerantha, setiflora, spicigera var. cephalotes, spicigera var. spicigera, tarmensis var. macrochaeta, tarmensis var. tarmensis, trichodonta var. hirsuta, trichodonta var. trichodonta, velutina var. velutina, velutina var. nardifolia, vicunarum, violacea var. violacea, violacea var. puberula, viridiflavescens var. viridiflavescens, viridiflavescens var. montevidensis, viridis |
| Cinnamodendron | axillare, catarinense, dinisii |
| Cinnamomum | glanduliferum, riedelianum, triplinerve, verum |
| Cipura | paludosa ssp. boliviensis |
| Cirrhaea | dependens var. ornata, dependens var. dependens, fuscolutea, loddigesii, longiracemosa |
| Cirsium | arvense, vulgare |
| Cissampelos | andromorpha, arenicola, glaberrima, laxiflora, ovalifolia, pareira, tropaeolifolia |
| Cissarobryon | elegans |
| Cissus | campestris, duarteana, erosa, gongylodes, palmata, paullinifolia, spinosa, stipulata, subrhomboidea, sulcicaulis, verticillata |
| Cistanthe | aegitalis, amarantoides, arancioana, cabrerae, cachinalensis, calycina, celedoniana, celosioides, cephalophora, chamissoi, chrysantha, coquimbensis, crassifolia, cymosa, densiflora, fenzlii, floresiorum, frigida, grandiflora, humilis, josetomasallendeana, lamprosperma, laxiflora, litoralis, longiscapa, minuscula, mucronulata, neonominata, oblongifolia, philhershkovitziana, picta, salsoloides, stricta, thyrsoidea, trigona, vicina |
| Citharexylum | amabilis, andinum, glaziovii, joergensenii, montevidense, myrianthum, solanaceum |
| Citronella | apogon, engleriana, gongonha, mucronata, paniculata, toledoi |
| Citrullus | colocynthis, lanatus ssp. vulgaris, lanatus ssp. lanatus |
| Citrus | aurantium, reticulata |
| Cladanthus | mixtus |
| Cladium | jamaicense, mariscus |
| Clara | gracilis, ophiopogonoides, stricta |
| Clarkia | amoena, tenella ssp. tenella, tenella ssp. araucana, tenella ssp. tenuifolia, tenella ssp. ambigua |
| Clavija | nutans |
| Claytonia | perfoliata |
| Cleistes | aphylla, australis, exilis, gracilis, libonii, mantiqueirae, montana, moritzii, pallida, paranaensis, ramboi, rosea, tenuis |
| Cleistocactus | baumannii ssp. horstii, baumannii ssp. baumannii, ferrarii, hyalacanthus, smaragdiflorus |
| Clematicissus | pruinata, striata, striata ssp. argentina, tweedieana |
| Clematis | affinis, bonariensis, brasiliana, campestris, haenkeana, ulbrichiana |
| Cleobulia | coccinea |
| Cleome | chilensis, chodatiana, lanceolata var. paraguarensis |
| Cleoserrata | paludosa |
| Clerodendrum | bungei, chinense, ekmanii, thomsoniae |
| Clethra | scabra var. scabra, scabra var. venosa, scabra var. laevigata, uleana |
| Clibadium | armanii, peruvianum |
| Clinanthus | humilis |
| Clinopodium | bolivianum ssp. tarijense, bolivianum ssp. bolivianum, brownei, darwinii, gilliesii, odorum, vulgare |
| Cliococca | selaginoides |
| Clistax | brasiliensis |
| Clitoria | cordobensis, densiflora, epetiolata var. epetiolata, epetiolata var. latiuscula, epetiolata var. angustissima, fairchildiana, falcata var. aurantiaca, falcata var. falcata, guianensis, laurifolia, nana |
| Clusia | criuva ssp. parviflora, criuva ssp. criuva |
| Cnicothamnus | azafran, lorentzii |
| Cnidochloa | longipedicellata |
| Cnidoscolus | albomaculatus, appendiculatus, campanulatus, hasslerianus, leuconeurus, loasoides, maracayensis, pteroneurus, serrulatus, subinteger, tenuifolius, urens, vitifolius var. cnicodendrum |
| Cobaea | scandens |
| Coccocypselum | capitatum, condalia, cordifolium, geophiloides, glabrifolium, hasslerianum, lanceolatum, lyman-smithii, monanthos, pulchellum |
| Coccoloba | arborescens, argentinensis, cordata, cujabensis, glaziovii, guaranitica, paraguariensis, persicaria, spinescens, tiliacea, warmingii |
| Cochliasanthus | caracalla |
| Cochlidium | punctatum, serrulatum |
| Cochlospermum | regium, tetraporum |
| Codonanthe | cordifolia, devosiana, gracilis |
| Codonorchis | canisioi, lessonii |
| Cohniella | cepula, jonesiana |
| Coix | lacryma-jobi |
| Colanthelia | cingulata, intermedia, rhizantha |
| Coleataenia | prionitis |
| Coleostephus | myconis |
| Colignonia | glomerata |
| Collaea | argentina, aschersoniana, caerulea, paraguariensis, riparia, speciosa, stenophylla |
| Colletia | hystrix, paradoxa, spartioides, spinosissima, ulicina |
| Colliguaja | brasiliensis, dombeyana, integerrima, odorifera, salicifolia |
| Collomia | biflora, grandiflora |
| Colobanthus | lycopodioides, quitensis, subulatus |
| Colocasia | esculenta |
| Cologania | broussonetii |
| Colubrina | glandulosa var. reitzii, retusa var. latifolia |
| Colutea | arborescens |
| Comanthera | xeranthemoides |
| Combera | minima, paradoxa |
| Combretum | duarteanum, fruticosum, lanceolatum, laxum, leprosum, mellifluum |
| Commelina | benghalensis, catharinensis, dielsii, diffusa, erecta, longicaulis, obliqua, platyphylla, tuberosa |
| Commiphora | leptophloeos |
| Comparettia | coccinea |
| Conanthera | bifolia, campanulata, parvula, trimaculata, urceolata |
| Conchocarpus | pentandrus |
| Condalia | buxifolia, megacarpa, microphylla, montana |
| Condea | elegans, fastigiata, floribunda, thyrsiflora, undulata |
| Condilorachia | bulbosa, juergensii |
| Condylocarpon | isthmicum |
| Condylostylis | candida |
| Conium | maculatum |
| Connarus | rostratus, subpeltatus |
| Conobea | glechomoides, scoparioides |
| Conocarpus | erectus |
| Constantia | australis, rupestris |
| Convolvulus | arvensis, bonariensis, chilensis, crenatifolius ssp. crenatifolius, crenatifolius ssp. montevidensis, demissus, ensifolius, hasslerianus, hermanniae ssp. erosus, hermanniae ssp. hermanniae, laciniatus, lilloi, montanus, schulzei, sepium ssp. sepium, sepium ssp. americana, soldanella |
| Conyza | andina, arabidifolia, blakei, boelckei, bonariensis var. angustifolia, bonariensis var. bonariensis, burkartii, bustillosiana, catharinensis, copiapina, cordata, coronopifolia, depilis, deserticola, foliosa, gayana, glabrata, glandulitecta, laevigata, larrainiana, lateralis, lechleri, lorentzii, macrophylla, magnimontana, monorchis, oligantha, pampeana, pencana, primulifolia, reitziana, retirensis, saltensis, serrana, spiciformis, spiculosa, stenophylla, suffruticosa, sumatrensis var. leiotheca, sumatrensis var. sumatrensis, tenera, thermarum, tunariensis, valdiviana |
| Copaifera | laevis, langsdorffii var. langsdorfii, langsdorffii var. glabra, langsdorfii var. laxa, langsdorfii var. grandifolia, trapezifolia |
| Copernicia | alba |
| Copiapoa | ahremephiana, algarrobensis, australis, boliviana, calderana, cinerascens, cinerea var. cinerea, cinerea var. gigantea, cinerea var. columna-alba, coquimbana var. coquimbana, coquimbana var. fiedleriana, corralensis, dealbata, decorticans, echinata, echinoides, eremophila, fusca, grandiflora, hoffmanniana, humilis var. esmeraldana, humilis ssp. matancillensis, humilis var. tocopillana, humilis var. longispina, humilis var. tenuissima, humilis var. varispinata, humilis var. humilis, humilis var. taltalensis, hypogaea var. montana, hypogaea var. hypogaea, krainziana, laui, longistaminea, marginata var. bridgesii, marginata var. marginata, megarhiza, rarissima, rupestris, serpentisulcata, solaris |
| Coprosma | arnottiana, granadensis, oliveri, pyrifolia |
| Corchorus | hirtus, orinocensis |
| Cordia | alliodora, americana, bordasii, decandra, ecalyculata, glabrata, glazioviana, magnoliifolia, rufescens, saccellia, sellowiana, silvestris, superba, taguahyensis, tarodae, trichotoma |
| Cordiera | concolor, humilis, myrsiifolia, sessilis |
| Cordobia | argentea |
| Cordyline | sellowiana, terminalis |
| Coreopsis | fasciculata, grandiflora, lanceolata, suaveolens, tinctoria |
| Coriandrum | sativum |
| Coriaria | ruscifolia |
| Coronilla | varia |
| Corrigiola | crassifolia, propinqua, squamosa var. latifolia, squamosa var. squamosa, squamosa var. poeppigii |
| Corryocactus | brevistylus |
| Cortaderia | araucana, egmontiana, hieronymi, selloana ssp. jubata, selloana ssp. selloana, speciosa, vaginata |
| Cortesia | cuneifolia |
| Corymborkis | flava |
| Corynabutilon | bicolor, ceratocarpum, hirsutum, ochsenii, salicifolium, viride, vitifolium |
| Corynephorus | divaricatus, fasciculatus |
| Cosmos | bipinnatus, peucedanifolius var. tiraquensis, peucedanifolius var. peucedanifolius, sulphureus |
| Costus | arabicus, scaber, spiralis |
| Cotoneaster | franchetii, glaucophyllus, horizontalis, pannosus |
| Cottea | pappophoroides |
| Cotula | australis, coronopifolia, mexicana |
| Couepia | grandiflora, uiti |
| Coursetia | brachyrhachis, hassleri |
| Coussapoa | microcarpa |
| Coussarea | contracta var. contracta, contracta var. panicularis, platyphylla |
| Coutarea | alba, hexandra |
| Cranfillia | caudata, longicauda, mucronata |
| Cranichis | candida, castellanosii, ciliata, hassleri, muscosa |
| Craniolaria | integrifolia |
| Crassula | caudiculata, closiana, connata var. connata, connata var. muscoides, connata var. erectoides, decumbens, drummondii, longipes, minutissima, moschata, peduncularis, phascoides, solieri, tillaea, venezuelensis |
| Crataegus | monogyna |
| Crateva | tapia |
| Cratylia | intermedia |
| Cremolobus | chilensis |
| Crepidomanes | pyxidiferum var. pyxidiferum, pyxidiferum var. australe |
| Crepis | capillaris, foetida, pulchra, setosa, vesicaria ssp. taraxacifolia |
| Cressa | nudicaulis, truxillensis |
| Crinodendron | brasiliense, hookerianum, patagua, tucumanum |
| Crinum | americanum |
| Criscia | stricta |
| Cristaria | adenophora, andicola, argyliifolia, aspera var. formosula, aspera var. sadae, aspera var. aspera, calderana, cordato-rotundifolia, cyanea, dissecta var. glandulosa, dissecta var. dissecta, dissecta var. inconspicua, fuentesiana, glaucophylla var. glaucophylla, glaucophylla var. eriantha, gracilis, insularis var. johowii, insularis var. insularis, integerrima var. lobulata, integerrima var. integerrima, leucantha, molinae, multiflora, ovata, tenuissima, viridiluteola var. viridiluteola, viridiluteola var. pinnata |
| Cristobalia | australis, bella, hirsutissima, hispida |
| Critonia | arachnoidea, megaphylla, morifolia |
| Critoniopsis | quinqueflora |
| Crocanthemum | brasiliense |
| Crocosmia | crocosmiiflora |
| Crotalaria | balansae, breviflora, chaco-serranensis, grahamiana, hilariana, incana, juncea, lanceolata, martiana ssp. mohlenbrockii, maypurensis, micans, ochroleuca, pallida, paulina, pilosa, pumila, retusa, sagittalis, spectabilis, stipularia, subdecurrens, trichotoma, tweediana, vespertilio, virgulata, vitellina |
| Croton | aberrans, ackermannianus, andinus, antisyphiliticus, apostolon, argenteus, argentinus, argyrophyllus, bacupariensis, beetlei, berberifolius, bonplandianus, bresolinii, calonervosus, calyciglandulosus, calycireduplicatus, campestris, catamarcensis, catharinensis, ceanothifolius, celtidifolius, chaetophorus, chamaepitys, chilensis, chloroleucos, chodatii, cinerellus, confinis, cooperianus, cuchillae-nigrae, curiosus, dichrous, didrichsenii, doctoris, doratophylloides, doratophyllum, dracunculoides, dusenii, echinulatus, emporiorum, ericoides, erythroxyloides, eskuchei, flavispicatus, floribundus, fulvus, garckeanus, glandulosus, glechomifolius, gnaphalii, goyazensis, gracilipes, grandivelus, guaritensis, helichrysum, heterodoxus, heteroneurus, hieronymi, hilarii, hirtus, holodiscus, ichthygaster, integrilobus, isabellei, julopsidium, kleinii, lachnostephanus, lanatus var. lorentzii, lanatus var. tatacuensis, lanatus var. lanatus, lanatus var. astrogynus, lanatus var. ruderalis, landoltii, laureltyanus, leptophyllus, linearifolius, lombardianus, longicarpus, lundianus, macrobothrys, malacotrichus, malvoides, microcarpus, montevidensis, muellerianus, myrianthus, nitrariifolius, occidentalis, odontadenius, orbignyanus, ovalifolius, pallidulus, paraguayensis, parvifolius, patrum, pedersenii, pedicellatus, perviscosus, phyllanthus, piluliferum, polygonoides, pycnocephalus, pygmaeus, pyrosoma, quintasii, ramboi, ramellae, reitzii, robustior, rupestris, rutilus, saltensis, salutaris, santolinus, senescens, serpyllifolius, serratifolius, setiger, spissirameus, splendidus, subcinerellus, subpannosus, thellungianus, thymelinus, tricolor, trinitatis, triqueter, urucurana, uruguayensis, verbascoides, villosissimus, viridulus, vulnerarius, yerbalium |
| Cruckshanksia | hymenodon, lithiophila, macrantha, montiana, palmae, pumila, verticillata |
| Crumenaria | erecta, lilloi |
| Cryophytum | crystallinum |
| Cryptangium | junciforme, polyphyllum, triquetum |
| Cryptantha | alfalfalis, alyssoides, aprica, argentea, aspera, calycina, calycotricha, capituliflora, chaetocalyx, chispae, cynoglossoides, dichita, diffusa, dimorpha, dolichophylla, filaginea, filiformis, gayi, globulifera, glomerata ssp. quadrinuculata, glomerata ssp. glomerata, glomerulifera, gnaphalioides, haplostachya, hispida, involucrata, kingii, latefissa, limensis, linearis, longifolia, marioricardiana, maritima var. pilosa, marticorenae, mendocina, papillosa, patagonica, phaceloides, romanii, spathulata, subamplexicaulis, taltalensis, volckmannii, werdermanniana |
| Cryptanthella | bella, caldensis, catharinae, catharinae var. hatschbachii, tessmannii |
| Cryptocarya | alba, aschersoniana, mandioccana, moschata |
| Cryptogramma | fumariifolia |
| Ctenanthe | capusoides, compressa, glabra, lanceolata, lubbersiana, luschnathiana, marantifolia, muelleri, oppenheimiana, setosa |
| Ctenitis | abyssi, ampla, anniesii, aspidioides, bigarellae, deflexa, distans var. distans, distans var. isabellina, eriocaulis, falciculata, fenestralis, flexuosa, glandulosa, laetevirens, nervata, paranaensis, submarginalis var. tenuifolia, submarginalis var. submarginalis |
| Ctenium | brachystachyum, brevispicatum, cirrosum, polystachyum |
| Ctenodon | brasilianus, elegans, falcatus var. falcatus, falcatus var. hassleri, histrix var. apanus, histrix var. densiflorus, histrix var. multijugus, histrix var. histrix, histrix var. incanus, lorentzianus, molliculus, paniculatus, viscidulus |
| Cuatrecasasiella | argentina |
| Cucumis | anguria, melo var. dudaim, prophetarum |
| Cucurbita | ficifolia, maxima ssp. maxima, maxima ssp. andreana, moschata, pepo |
| Cucurbitella | asperata |
| Culcita | coniifolia |
| Cuminia | eriantha |
| Cumulopuntia | boliviana, dactylifera, pentlandii, recurvata, sphaerica |
| Cunila | angustifolia, fasciculata, galioides, incana, incisa, menthiformis, menthoides, microcephala, platyphylla, spicata, tenuifolia |
| Cupania | oblongifolia, tenuivalvis, vernalis |
| Cuphea | acinifolia, aperta, bonplandii, calophylla ssp. calophylla, calophylla ssp. mesostemon, campylocentra, carthagenensis, confertiflora, cordata, corisperma ssp. hexasperma, corisperma ssp. corisperma, flava var. flava, fruticosa, glaziovii, glutinosa, hatschbachii, hirsutissima, inaequalifolia, ingrata, laeviuscula, linarioides, lindmaniana, linifolia, lutescens, lysimachioides, melvilla, micrantha, niederleinii, origanifolia, paranensis, persistens, polymorpha var. polymorpha, polymorpha var. vincoides, pterosperma, punctulata, racemosa ssp. racemosa, racemosa ssp. longiflora, racemosa var. ramosior, racemosa var. palustris, reitzii, rusbyi, sessiliflora, sessilifolia, stenopetala, strigulosa, thymoides var. saturejoides, thymoides var. thymoides, tuberosa, urbaniana var. uleana, urbaniana var. urbaniana, varia |
| Cupressus | arizonica, macrocarpa |
| Curatella | americana |
| Curculigo | scorzonerifolia |
| Curitiba | prismatica |
| Curtia | conferta, tenuifolia |
| Cuscuta | alataloba, americana, andina, argentinana var. parviflora, argentinana var. argentinana, boliviana var. boliviana, boliviana var. paranensis, campestris, chilensis, corniculata, cristata var. cristata, cristata var. chacoensis, epilinum, epithymum var. macranthera, epithymum var. angustissima, epithymum var. epithymum, flossdorfii var. flossdorfii, flossdorfii var. pampagrandensis, flossdorfii var. tucumanensis, flossdorfii var. microstyla, friesii, globiflora, grandiflora, incurvata, indecora var. neuropetala, indecora var. indecora, indecora var. longisepala, insquamata var. argentina, longiloba, membranacea, micrantha var. micrantha, microstyla var. microstyla, obtusiflora, odorata var. botryoides, odorata var. odorata, orbiculata, parodiana var. tucumana, parodiana var. parodiana, partita, pauciflora, platyloba var. pampeana, platyloba var. platyloba, purpurata, racemosa var. nuda, racemosa var. racemosa, rojasii, rotundiflora, rustica, suaveolens, taimensis, werdermannii, xanthochortos var. lanceolata, xanthochortos var. carinata, xanthochortos var. longibracteata, xanthochortos var. xanthochortos, yunckeriana |
| Cuspidaria | convoluta, lateriflora, pulchella, sceptrum |
| Cyanaeorchis | arundinae, minor |
| Cyanocephalus | apertiflorus, poliodes, tripartitus |
| Cyathea | atrovirens, corcovadensis, delgadii, dichromatolepis, feeana, hirsuta, iheringii, leucofolis, microdonta, miersii, myriotricha, phalerata, poeppigii, praecincta, pungens, uleana, villosa |
| Cybianthus | brasiliensis, peruvianus |
| Cybistax | antisyphilitica |
| Cyclanthera | eichleri, hystrix, oligoechinata, pedata, quinquelobata, tamnifolia, tenuifolia, tenuisepala |
| Cyclodium | meniscioides |
| Cyclolepis | genistoides |
| Cyclolobium | brasiliense |
| Cyclopogon | alexandrae, apricus, argyrifolius, bicolor, calophyllus, chloroleucus, congestus, deminkiorum, dusenii, dutraei, elatus, elegans, graciliscapus, hatschbachii, iguapensis, itatiaiensis, longibracteatus, micrantthus, multiflorus, oliganthus, subalpestris, taquaremboensis, trifasciatus, variegatus, vittatus, warmingii |
| Cyclosorus | interruptus |
| Cyclospermum | laciniatum, leptophyllum var. multisectum, leptophyllum var. latisectum, leptophyllum var. leptophyllum, uruguayense |
| Cylindropuntia | imbricata, tunicata |
| Cymbalaria | muralis |
| Cymbocarpa | refracta |
| Cymbopogon | citratus, winterianus |
| Cynanchum | caudiculatum, montevidense, rioparanense, roulinioides, sp |
| Cynara | cardunculus |
| Cynodon | affinis, dactylon var. pilosus, dactylon var. longiglumis, dactylon var. dactylon, dactylon var. biflorum, distichioides, hirsutissimus, incompletus var. hirsutus, laeviglumis, maritimus var. maritimus, maritimus var. grandispiculus, maritimus var. breviglumis, mucronatus, nitidus, nlemfuensis, pedicellatus, plectostachyus |
| Cynoglossum | amabile, creticum, zeylanicum |
| Cynometra | bauhiniifolia var. meridiana, bauhiniifolia var. bauhiniifolia |
| Cynophalla | declinata, flexuosa, polyantha, retusa |
| Cynosurus | cristatus, echinatus |
| Cypella | alonsoana, amambaica, aquatilis, armosa, aurinegra ssp. albipurpurata, aurinegra, charruana, crenata, cruenta, curuzupensis, discolor, exilis, fucata, gloriana, guttata, hauthalii ssp. hauthalii, herbertii ssp. reflexa, herbertii ssp. wolffhuegeli, herbertii ssp. brevicristata, herbertii ssp. herbertii, laeta, lapidosa, laxa, lilacea, linearis, luteogibbosa, magnicristata, opalina ssp. minuticristata, opalina, osteniana, pabstiana, parviflora, pusilla, ravenniana, rivularis, suffusa, trimontina, uliginosa |
| Cyperus | affinis, aggregatus, alternifolius, andinus, andreanus var. capitinduensis, andreanus var. yguazensis, andreanus var. andreanus, anisitsii, barrosianus, berroi, bipartitus, blepharoleptos, brasiliensis, brevifolius, burkartii, byssaceus, celluloso-reticulatus, cephalanthus, chalaranthus, compressus, cornelii-ostenii var. pilcomayensis, cornelii-ostenii var. cornelii-ostenii, corymbosus var. subnodosus, corymbosus var. corymbosus, cyperoides, densicaespitosus, difformis, digitatus, distans, drummondii, entrerianus var. parvicapitulatus, entrerianus var. entrerianus, eragrostis var. compactus, eragrostis var. eragrostis, esculentus var. leptostachyus, esculentus var. macrostachyus, esculentus var. esculentus, felipponei, flavescens var. piceus, flavicomus, fraternus, friburgensis, fuscus, gardneri, giganteus, grammicus, haspan var. haspan, haspan var. amplissimus, haspan var. coarctatus, hermaphroditus, hieronymi, imbricatus, incomtus var. incomtus, infucatus, inops, intricatus, involucratus, iria, laevigatus, lanceolatus, laxus, ligularis, luzulae, manimae, megapotamicus var. megapotamicus, megapotamicus var. jaeggii, meridionalis, meyenianus, mundtii, mundulus, muniziae, niederleinianus, niger, obtusatus, ochraceus, odoratus, oxylepis, papyrus, pearcei, pedunculatus , phaeocephalus, poeppigii, pohlii, polystachyos, prolixus, redolens, reflexus, rigens ssp. arechavaletae, rigens var. impolitus, rigens var. rigens, rotundus, sellowianus, sesquiflorus, shepherdii, spectabilis var. jujuyensis, sphacelatus, squarrosus, strongii, subsquarrosus, surinamensis var. surinamensis, surinamensis var. lutescens, tenuis, trigynus, tweediei, uncinulatus, unicolor, unioloides, virens var. montanus, virens var. virens, virens var. minarum, volckmannii, xanthostachyus |
| Cyphocarpus | innocuus, psammophilus, rigescens |
| Cyrtocymura | cincta, scorpioides |
| Cyrtomium | falcatum |
| Cyrtopodium | andersonii, brandonianum ssp. brandonianum, dusenii, eugenii, flavum, gigas, hatschbachii, izaguirreae, kleinii, lageanum, pallidum, palmifrons, paludicolum, paniculatum, parviflorum, pflanzii, saintlegerianum, valebellae, virescens, witeckii |
| Cystopteris | apiiformis, diaphana |
| Cytisus | scoparius, striatus |
|
