Index
- Cabomba caroliniana, fanwort
- Caesalpinia bonduc, gray nicker
- Caesalpinia pulcherrima, pride-of-barbados, dwarf poinciana
- Cakile edentula subsp. harperi, American searocket
- Cakile lanceolata, coastal searocket
- Calamintha ashei, Ashe's savory
- Calamintha coccinea, scarlet savory
- Calamintha dentata, toothed savory
- Calamintha georgiana, savory
- Callicarpa americana, beautyberry
- Callirhoe papaver, woods poppy mallow
- Callisia fragrans, fragrant callisia
- Callisia graminea, grassleaf roseling
- Callisia ornata, scrub roseling
- Callisia rosea, piedmont roseling
- Callistemon viminalis, weeping bottlebrushtree
- Calopogon barbatus, bearded grasspink
- Calopogon multiflorus, manyflowered grasspink
- Calopogon pallidus, pale grasspink
- Calopogon tuberosus, tuberous grass-pink
- Calycanthus floridus var. glaucus, sweetshrub
- Calyptocarpus vialis, prostrate lawnflower
- Calyptranthes pallens, pale lidflower, spicewood
- Calyptranthes zuzygium, myrtle-of-the-river
- Calystegia sepium subsp. limnophila, bindweed
- Campanula floridana, Florida bellflower
- Campanula robinsiae, Brooksville bellflower
- Campsis radicans, trumpet-vine
- Campylocentrum pachyrrhizum, ribbon orchid, leafless orchid
- Campyloneurum costatum, tailed strap fern
- Campyloneurum phyllitidis, strap fern
- Canavalia rosea, seaside bean. Baybean
- Canella winteriana, wild cinnamon
- Canna flaccida, golden canna
- Canna indica, Indian shot
- Canna xgeneralis, hybrid canna
- Caperonia palustris, marsh caperonia
- Capparis cynophallophora, Jamaica caper-tree
- Capparis flexuosa, bay-leaved caper-tree
- Capraria biflora, goatweed
- Capsicum annuum var. glabriusculum, wild pepper, bird pepper, cayenne pepper
- Capsicum frutescens, tabasco cultivated pepper
- Cardamine bulbosa, springcress
- Cardamine concatenata, cut-leaved toothwort
- Cardamine pensylvanica, Pennsylvana bittercress
- Carex atlantica subsp. capillacea, prickly bog sedge
- Carex baltzellii, Baltzall's sedge
- Carex dasycarpa, sandywoods sedge
- Carex debilis, white-edge sedge
- Carex gholsonii, Gholson's sedge
- Carex gigantea, large sedge
- Carex glaucescens, clustered sedge
- Carex granularis, meadow sedge
- Carex intumescens, greater bladder sedge
- Carex longii, Long's sedge
- Carex lupulina, hop sedge
- Carex mitchelliana, Mitchell's sedge
- Carex nigromarginata, blackedge sedge
- Carex stipata, stalk-grain sedge, sawbeak sedge
- Carex verrucosa, warty sedge
- Carica papaya, papaya
- Carissa macrocarpa, natal-plum
- Carphephorus carnosus, bald-headed carphephorus
- Carphephorus corymbosus, coastal-plain chaffhead
- Carphephorus odoratissimus, vanilla-plant, deer's tongue
- Carphephorus paniculatus, deer tongue, hairy trilisa
- Carphephorus pseudoliatris, bristle-leaf chaffhead
- Carpinus caroliniana, American hornbeam, musclewood, blue-beech
- Cartrema americanus, wild olive, American devilwood
- Cartrema floridana, scrub wild olive
- Carya alba, mockernut hickory
- Carya aquatica, water hickory
- Carya cordiformis, bitternut hickory
- Carya floridana, scrub hickory
- Carya glabra, pignut hickory
- Carya illinoinensis, pecan
- Carya pallida, sand hickory
- Cassytha filiformis, love vine
- Castanea dentata, American chestnut
- Castanea mollissima, Chinese chestnut
- Castanea pumila, Ashe's chinquapin, trailing chinquapin
- Castilleja indivisa, Indian paintbrush
- Casuarina equisetifolia, Australian-pine
- Catalpa bignonioides, catalpa
- Catesbaea parviflora, lilythorn
- Catharanthus roseus, Madagascar periwinkle
- Catopsis floribunda, many-flowered catopsis
- Catopsis nutans, nodding catopsis
- Ceanothus americanus, New Jersey tea
- Ceanothus microphyllus, littleleaf buckbrush
- Celtis iguanaea, iguana hackberry
- Celtis laevigata, hackberry, sugarberry
- Celtis occidentalis, Georgia hackberry, dwarf hackberry
- Cenchrus echinatus, southern sandspur
- Cenchrus gracillimus, slender sandspur
- Cenchrus spinifex, coast sandspur
- Cenchrus tribuloides, dune sandspur
- Centaurea cyanus, corn flower batchelor's button
- Centaurea maculosa, spotted knapweed
- Centella asiatica, coinwort
- Centrosema arenicola, sand butterfly pea
- Centrosema virginianum, spurred butterflypea
- Cephalanthus occidentalis, buttonbush
- Ceratiola ericoides, rosemary
- Ceratophyllum demersum, hornwort, common coontail
- Ceratopteris thalictroides, oriental water horn fern
- Cercis canadensis, redbud
- Chaerophyllum procumbens, spreading chervil
- Chamaecrista fasciculata, sleeping plant, partridge-pea
- Chamaecrista lineata var. keyensis, Big Pine partridge pea
- Chamaecrista nictitans, partridge pea, wild sensitiveplant
- Chamaecrista nictitans var. aspera, flatwoods partridge pea
- Chamaecyparis thyoides, Atlantic white cedar
- Chamaesyce cordifolia, round-leaved spurge
- Chamaesyce cumulicola, sand-dune spurge
- Chamaesyce garberi, Garber's spurge
- Chamaesyce hirta, garden spurge, hairy pillpod sandmat, spurge
- Chamaesyce hypericifolia, graceful sandmat, spurge
- Chamaesyce hyssopifolia, eyebane
- Chamaesyce maculata, milk-purslane, spotted sandmat
- Chamaesyce mesembrianthemifolia, spurge
- Chamaesyce pergamena, rocklands spurge
- Chamaesyce porteriana, Porter's spurge
- Chamaesyce prostrata, spurge
- Chapmannia floridana, alicia
- Chaptalia tomentosa, pineland daisy
- Chasmanthium latifolium, Indian woodoats, spikegrass
- Chasmanthium laxum, slender woodoats, uniola woodgrass
- Chasmanthium laxum var. sessiliflorum, longleaf chasmanthium
- Chenopodium album, lamb's-quarters
- Chenopodium ambrosioides, Mexican-tea
- Chimaphila maculata, spotted wintergreen
- Chiococca alba, snowberry
- Chionanthus pygmaeus, pigmy fringe tree
- Chionanthus virginicus, fringe tree
- Chloris gayana, rhodesgrass
- Chrysanthemum leucanthemum, ox-eye daisy
- Chrysobalanus icaco, coco-plum
- Chrysogonum virginianum var. australe, southern green-and-gold
- Chrysoma pauciflosculosa, bush goldenrod
- Chrysophyllum oliviforme, satinleaf
- Chrysopsis cruiseana, Cruise's goldenaster
- Chrysopsis floridana, Florida goldenaster
- Chrysopsis gossypina, hairy goldenaster
- Chrysopsis gossypina subsp. crusiana, Cruise's goldenaster
- chrysopsis highlandensis, highlands goldenaster
- Chrysopsis lanuginosa, goldenaster
- Chrysopsis linearifolia, goldenaster
- Chrysopsis linearifolia subsp. dressii, narrowleaf goldenaster
- Chrysopsis mariana, Maryland goldenaster
- Chrysopsis scabrella, rough-leaf goldenaster
- Chrysopsis subulata, leafy goldenaster
- Cichorium intybus, chicory
- Cicuta maculata, water hemlock
- Cinnamomum camphora, camphor tree
- Cirsium horridulum, horrible thistle
- Cirsium lecontei, Leconte's thistle
- Cirsium nuttallii, Nuttall's thistle
- Cirsium vulgare, thistle
- Cissus verticillata, seasonvine, possum-grape
- Citrullus lanatus, wild watermelon
- Citrus aurantium, sour orange
- Citrus reticulata, tangerine, Mandarin orange
- Citrus sinensis, sweet orange
- Cladium jamaicense, saw-grass
- Cladonia perforata, perforate lichen
- Clematis baldwinii, pine-hyacinth
- Clematis crispa, swamp leather flower
- Clematis reticulata, netleaf virgin's-bower
- Clematis virginiana, Virginia virgin's-bower
- Cleome hassleriana, spider-flower
- Clerodendrum bungei, strong-scented glorybower
- Clerodendrum chinense, Stickbush glorybower
- Clerodendrum indicum, turk's-turban, skyrocket
- Clerodendrum speciosissimum, Javanese glorybower, pagoda flower
- Clethra alnifolia, sweet pepperbush, summersweet
- Cliftonia monophylla, black titi, spring titi, buckwheat-tree
- Clitoria fragrans, pigion-wing butterfly-pea
- Clitoria mariana, butterfly-pea
- Clusia rosea, balsam-apple, autograph-tree, pitch-apple
- Cnidoscolus stimulosus, tread softly
- Coccoloba diversifolia, pigeon plum, dove plum, tie-tongue
- Coccoloba uvifera, seagrape
- Coccothrinax argentata, silver thatch palm
- Cocculus carolinus, coralbeads
- Cocos nucifera, coconut palm
- Coelorachis rugosa, wrinkled jointtail
- Coleus pumilus, coleus
- Collinsonia canadensis, collinsonia, horse-balm
- Collinsonia serotina, collinsonia
- Colocasia esculenta, elephant's ear, wild taro, dasheen
- Colubrina elliptica, soldierwood
- Commelina gambiae, Gambian dayflower
- Commelina communis, Asiatic dayflower
- Commelina diffusa, spreading dayflower
- Commelina erecta, sandhill dayflower
- Commelina virginica, Virginia dayflower
- Conocarpus erectus, buttonwood
- Conoclinium coelestinum, mistflower, ageratum
- Conopholis americana, squawroot, cancerroot
- Conradina brevifolia, short-leaved conradina
- Conradina canescens, false-rosemary
- Conradina etonia, etonia conradina
- Conradina glabra, Apalachicola conradina
- Conradina grandiflora, large-flowered conradina
- Conyza canadensis, horseweed
- Corallorrhiza wisteriana, spring (=Wister's) coralroot
- Cordia globosa, bloodberry, butterfly-sage
- Cordia sebestena, geiger tree
- Coreopsis floridana, Florida tickseed
- Coreopsis gladiata, southeastern tickseed
- Coreopsis integrifolia, Chipola dye-flower
- Coreopsis lanceolata, lance-leaved tickseed
- Coreopsis leavenworthii, Leavenworth's tickseed
- Coreopsis linifolia, Texas tickseed
- Coreopsis nudata, swamp tickseed
- Coreopsis pubescens, star tickseed
- Coreopsis tinctoria, golden tickseed
- Coreopsis tripteris, tall tickseed
- Cornus alternifolia, alternate-leaved dogwood
- Cornus amomum, silky dogwood, silky cornel
- Cornus asperifolia, rough-leaf cornel
- Cornus florida, flowering dogwood
- Cornus foemina, stiff cornel, swamp dogwood
- Coronilla varia, crown-vetch
- Corydalis micrantha subsp. australis, smallflower fumewort, harlequin
- Crassocephalum crepidioides, redflower ragleaf
- Crataegus aestivalis, May haw, apple haw
- Crataegus flava, yellow haw
- Crataegus marshallii, parsley hawthorn
- Crataegus michauxii, Michaux's hawthorn
- Crataegus spathulata, littlehip hawthorn, small-fruited hawthorn
- Crataegus uniflora, dwarf haw, one-flowered hawthorn
- Crataegus viridis, green hawthorn
- Crinum americanum, string lily, swamp lily
- Crinum asiaticum, tree crinum, poison bulb
- Crinum latifolium var. zeylanicum, milk-and-wine crinum
- Croomia pauciflora, few-flowered croomia
- Crossopetalum rhacoma, rhacoma, maidenberry
- Crotalaria avonensis, Avon Park rattlebox
- Crotalaria lanceolata, lanceleaf crotalaria
- Crotalaria pallida var. obovata, smooth crotalaria
- Crotalaria pumila, small rattlebox
- Crotalaria purshii, rattlebox
- Crotalaria rotundifolia, rabbit-bells
- Crotalaria spectabilis, showy crotalaria
- Croton argyranthemus, silver croton
- Croton capitatus, woolly croton
- Croton glandulosus, tropic croton, September croton
- Croton glandulosus var. floridanus, tropic croton
- Croton linearis, pineland croton
- Croton punctatus, beach tea
- Ctenitis sloanei, Florida treefern
- Ctenitis submarginalis, brown-hair combfern
- Ctenium aromaticum, toothache grass
- Cucurbita okeechobeensis, Indian pumpkin, Okeechobee gourd
- Cupaniopsis anacardioides, carrotwood
- Cuphea carthagenensis, Columbia waxweed
- Cuscuta exaltata, tall dodder
- Cuscuta gronovii, scaldweed
- Cuscuta obtusiflora var. glandulosa, Peruvian dodder
- Cynanchum angustifolium, Gulf coast swallowwort
- Cynanchum northropiae, fragrant swallowwort
- Cynanchum scoparium, shallow-wort, cynanchum
- Cynodon dactylon, Bermuda grass
- Cynoglossum virginianum, wild comphrey
- Cyperus compressus, poorland flatsedge
- Cyperus difformis, variable flatsedge
- Cyperus erythrorhizos, redroot flatsedge
- Cyperus esculentus, yellow nut-grass, chufa flatsedge
- Cyperus filiculmis, slender flatsedge
- Cyperus flavescens, yellow flatsedge
- Cyperus haspan, sheathed flatsedge
- Cyperus involucratus, umbrella plant
- Cyperus lecontei, Leconte's flatsedge
- Cyperus ligularis, swamp flatsedge
- Cyperus odoratus, fragrant flatsedge
- Cyperus papyrus, papryus flatsedge
- Cyperus polystachyos, many-spiked flatsedge
- Cyperus prolifer, dwarf papyrus
- Cyperus retrorsus, retrorse flatsedge
- Cyperus surinamensis, tropical flatsedge
- Cyperus tetragonus, four-angle flatsedge
- Cyperus virens, green flatsedge
- Cyrilla racemiflora, titi, cyrilla, leatherwood
- Cyrtomium falcatum, Japanese holly fern