Calamagrostis arundinacea
Calamagrostis canescens
Calamagrostis epigejos
Calamagrostis pseudophragmites
Calamagrostis villosa
Calendula officinalis
Calla palustris
Callitriche cophocarpa
Callitriche hamulata
Callitriche palustris
Callitriche platycarpa
Callitriche sp.
Callitriche stagnalis
Calluna vulgaris
Caltha palustris
Caltha palustris subsp. laeta
Caltha palustris subsp. palustris
Calystegia sepium
Camelina microcarpa
Camelina microcarpa subsp. microcarpa
Campanula bohemica
Campanula cervicaria
Campanula glomerata
Campanula latifolia
Campanula moravica
Campanula patula
Campanula persicifolia
Campanula rapunculoides
Campanula rotundifolia
Campanula rotundifolia subsp. rotundifolia
Campanula trachelium
Cannabis ruderalis
Cannabis sp.
Capsella bursa-pastoris
Caragana arborescens
Cardamine amara
Cardamine amara subsp. amara
Cardamine flexuosa
Cardamine hirsuta
Cardamine chelidonia
Cardamine impatiens
Cardamine matthioli
Cardamine pratensis
Cardamine sp.
Cardamine trifolia
Cardaminopsis arenosa
Cardaminopsis arenosa subsp. arenosa
Cardaminopsis arenosa subsp. borbasii
Cardaminopsis halleri
Cardaria draba
Carduus acanthoides
Carduus crispus
Carduus nutans
Carduus personata
Carex × alsatica
Carex × prolixa
Carex acuta
Carex acuta subsp. acuta
Carex acutiformis
Carex bohemica
Carex brizoides
Carex buekii
Carex canescens
Carex caryophyllea
Carex cespitosa
Carex contigua
Carex curvata
Carex demissa
Carex digitata
Carex digitata var. digitata
Carex distans
Carex disticha
Carex divulsa
Carex echinata
Carex elongata
Carex flacca
Carex flava
Carex flava agg.
Carex hartmanii
Carex hirta
Carex humilis
Carex chabertii
Carex lasiocarpa
Carex leersiana
Carex michelii
Carex montana
Carex muricata
Carex muricata agg.
Carex nigra
Carex ornithopoda
Carex otrubae
Carex ovalis
Carex pairae
Carex pallescens
Carex panicea
Carex paniculata
Carex pendula
Carex pilosa
Carex pilulifera
Carex praecox
Carex pseudocyperus
Carex pulicaris
Carex remota
Carex riparia
Carex rostrata
Carex sp.
Carex strigosa
Carex supina
Carex sylvatica
Carex tomentosa
Carex umbrosa
Carex vaginata
Carex vesicaria
Carex vulpina
Carlina acaulis
Carlina acaulis subsp. acaulis
Carlina biebersteinii
Carlina vulgaris
Carpinus betulus
Carum carvi
Castanea sativa
Centaurea × fleischeri
Centaurea cyanus
Centaurea diffusa
Centaurea jacea
Centaurea jacea agg.
Centaurea jacea subsp. jacea
Centaurea jacea subsp. oxylepis
Centaurea montana
Centaurea montana subsp. montana
Centaurea phrygia agg.
Centaurea scabiosa
Centaurea sp.
Centaurea stoebe
Centaurea stoebe subsp. australis
Centaurea stoebe subsp. stoebe
Centaurea triumfetii
Centaurium erythraea
Centaurium pulchellum
Centunculus minimus
Cephalanthera damasonium
Cephalanthera longifolia
Cephalanthera rubra
Cephalaria gigantea
Cerastium arvense
Cerastium brachypetalum
Cerastium dubium
Cerastium glomeratum
Cerastium glutinosum
Cerastium holosteoides
Cerastium holosteoides subsp. triviale
Cerastium lucorum
Cerastium semidecandrum
Cerastium tomentosum
Ceratophyllum demersum
Ceratophyllum submersum
Cerinthe minor
Cicerbita alpina
Cicuta virosa
Cichorium intybus
Circaea × intermedia
Circaea alpina
Circaea lutetiana
Circaea sp.
Cirsium × erucagineum
Cirsium × subalpinum
Cirsium acaule
Cirsium arvense
Cirsium canum
Cirsium eriophorum
Cirsium oleraceum
Cirsium palustre
Cirsium pannonicum
Cirsium rivulare
Cirsium sp.
Cirsium vulgare
Citrullus lanatus
Clematis recta
Clematis vitalba
Clinopodium vulgare
Coeloglossum viride
Cochlearia danica
Colchicum autumnale
Colutea arborescens
Commelina communis
Conioselinum tataricum
Conium maculatum
Consolida regalis
Convallaria majalis
Convolvulus arvensis
Conyza canadensis
Corispermum leptopterum
Cornus alba
Cornus mas
Cornus sanguinea
Cornus sanguinea subsp. australis
Cornus sanguinea subsp. hungarica
Cornus sanguinea subsp. sanguinea
Cornus sericea
Coronopus didymus
Corrigiola littoralis
Corydalis cava
Corydalis intermedia
Corydalis lutea
Corydalis pumila
Corydalis solida
Corylus avellana
Corynephorus canescens
Cotoneaster horizontalis
Cotoneaster integerrimus
Crataegus × calycina
Crataegus × macrocarpa
Crataegus laevigata
Crataegus monogyna
Crataegus praemonticola
Crataegus sp.
Crepis biennis
Crepis capillaris
Crepis foetida subsp. foetida
Crepis foetida subsp. rhoeadifolia
Crepis mollis subsp. hieracioides
Crepis paludosa
Crepis praemorsa
Crepis setosa
Crepis tectorum
Crithmum maritimum
Crocus albiflorus
Crocus heuffelianus
Cruciata glabra
Cruciata laevipes
Cucubalus baccifer
Cucurbita moschata
Cucurbita pepo
Cuscuta campestris
Cuscuta epithymum
Cuscuta europaea
Cymbalaria muralis
Cymbalaria pallida
Cynodon dactylon
Cynoglossum officinale
Cynosurus cristatus
Cyperus eragrostis
Cyperus flavescens
Cyperus fuscus
Cystopteris fragilis
Cytisus nigricans
Cytisus procumbens
Cytisus scoparius
Chaenorhinum origanifolium
Chaerophyllum aromaticum
Chaerophyllum bulbosum
Chaerophyllum hirsutum
Chaerophyllum temulum
Chamaecytisus supinus
Chelidonium majus
Chenopodium album
Chenopodium album agg.
Chenopodium bonus-henricus
Chenopodium botrys
Chenopodium ficifolium
Chenopodium foliosum
Chenopodium glaucum
Chenopodium hybridum
Chenopodium murale
Chenopodium pedunculare
Chenopodium polyspermum
Chenopodium pumilio
Chenopodium rubrum
Chenopodium sp.
Chenopodium striatiforme
Chenopodium strictum
Chenopodium suecicum
Chenopodium vulvaria
Chondrilla juncea
Chrysosplenium alternifolium