Calamagrostis arundinacea
Calamagrostis canescens
Calamagrostis epigejos
Calamagrostis pseudophragmites
Calamagrostis villosa
Calendula officinalis
Calla palustris
Callitriche cophocarpa
Callitriche hamulata
Callitriche palustris
Callitriche palustris agg.
Callitriche platycarpa
Callitriche sp.
Callitriche stagnalis
Calluna vulgaris
Caltha palustris
Caltha palustris subsp. laeta
Caltha palustris subsp. palustris
Caltha palustris subsp. procumbens
Calystegia pulchra
Calystegia sepium
Camelina alyssum
Camelina microcarpa
Camelina microcarpa subsp. microcarpa
Camelina sativa
Campanula bohemica
Campanula carpatica
Campanula cervicaria
Campanula glomerata
Campanula glomerata subsp. glomerata
Campanula latifolia
Campanula moravica
Campanula patula
Campanula persicifolia
Campanula rapunculoides
Campanula rotundifolia
Campanula rotundifolia subsp. rotundifolia
Campanula rotundifolia subsp. sudetica
Campanula sp.
Campanula trachelium
Cannabis sativa var. spontanea
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 resedifolia
Cardamine sp.
Cardamine trifolia
Carduus acanthoides
Carduus crispus
Carduus nutans
Carduus personata
Carex × alsatica
Carex × prolixa
Carex acuta
Carex acuta subsp. acuta
Carex acutiformis
Carex agastachys
Carex appropinquata
Carex bohemica
Carex brizoides
Carex buekii
Carex buxbaumii
Carex canescens
Carex caryophyllea
Carex cespitosa
Carex curvata
Carex davalliana
Carex demissa
Carex digitata
Carex digitata var. digitata
Carex distans
Carex disticha
Carex divulsa
Carex echinata
Carex elata
Carex elongata
Carex flacca
Carex flava
Carex flava agg.
Carex hartmanii
Carex hirta
Carex hostiana
Carex humilis
Carex lasiocarpa
Carex leersii
Carex lepidocarpa
Carex leporina
Carex melanostachya
Carex michelii
Carex montana
Carex muricata
Carex muricata agg.
Carex nigra
Carex oederi
Carex ornithopoda
Carex otomana
Carex otrubae
Carex pairae
Carex pallescens
Carex panicea
Carex paniculata
Carex pendula
Carex pendula agg.
Carex pilosa
Carex pilulifera
Carex praecox
Carex pseudocyperus
Carex pulicaris
Carex remota
Carex riparia
Carex rostrata
Carex secalina
Carex sp.
Carex spicata
Carex stenophylla
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 biebersteinii subsp. biebersteinii
Carlina vulgaris
Carpinus betulus
Carum carvi
Castanea sativa
Catalpa bignonioides
Caucalis platycarpos subsp. platycarpos
Celastrus orbiculatus
Centaurea × fleischeri
Centaurea cyanus
Centaurea diffusa
Centaurea erdneri
Centaurea jacea
Centaurea jacea agg.
Centaurea jacea subsp. jacea
Centaurea montana
Centaurea montana agg.
Centaurea nigra
Centaurea nigrescens
Centaurea oxylepis
Centaurea phrygia agg.
Centaurea scabiosa
Centaurea sp.
Centaurea stoebe
Centaurea stoebe subsp. australis
Centaurea stoebe subsp. stoebe
Centaurea triumfetti
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. vulgare
Cerastium lucorum
Cerastium semidecandrum
Cerastium sp.
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 × tataricum
Cirsium acaulon
Cirsium arvense
Cirsium brachycephalum
Cirsium canum
Cirsium eriophorum
Cirsium heterophyllum
Cirsium oleraceum
Cirsium palustre
Cirsium pannonicum
Cirsium rivulare
Cirsium sp.
Cirsium vulgare
Citrullus lanatus
Cladium mariscus
Clematis recta
Clematis vitalba
Clinopodium vulgare
Cnidium dubium
Coeloglossum viride
Cochlearia danica
Colchicum autumnale
Colutea arborescens
Comarum palustre
Commelina communis
Conioselinum tataricum
Conium maculatum
Consolida ajacis
Consolida hispanica
Consolida regalis
Convallaria majalis
Convolvulus arvensis
Conyza canadensis
Conyza sumatrensis
Coriandrum sativum
Corispermum pallasii
Corispermum sp.
Cornus alba
Cornus mas
Cornus sanguinea
Cornus sanguinea subsp. australis
Cornus sanguinea subsp. hungarica
Cornus sanguinea subsp. sanguinea
Cornus sericea
Corrigiola litoralis
Corydalis cava
Corydalis intermedia
Corydalis pumila
Corydalis solida
Corylus avellana
Corynephorus canescens
Cosmos bipinnatus
Cotoneaster acutifolius
Cotoneaster divaricatus
Cotoneaster fangianus
Cotoneaster horizontalis
Cotoneaster integerrimus
Cotoneaster sp.
Crambe maritima
Crataegus × calycina
Crataegus × macrocarpa
Crataegus laevigata
Crataegus monogyna
Crataegus rhipidophylla
Crataegus sp.
Crepis biennis
Crepis capillaris
Crepis foetida
Crepis foetida subsp. foetida
Crepis foetida subsp. rhoeadifolia
Crepis mollis subsp. succisifolia
Crepis paludosa
Crepis praemorsa
Crepis pulchra
Crepis setosa
Crepis tectorum
Crithmum maritimum
Crocus heuffelianus
Crocus napolitanus
Crocus sp.
Crocus tommasinianus
Cruciata laevipes
Cruciata verna
Cucurbita moschata
Cucurbita pepo
Cucurbita sp.
Cuscuta campestris
Cuscuta epithymum
Cuscuta europaea
Cyclamen purpurascens
Cymbalaria muralis
Cymbalaria pallida
Cynodon dactylon
Cynoglossum officinale
Cynoglossum sp.
Cynosurus cristatus
Cyperus eragrostis
Cyperus flavescens
Cyperus fuscus
Cyrtomium falcatum
Cystopteris fragilis
Cytisus nigricans
Cytisus procumbens
Cytisus scoparius
Chaenorhinum origanifolium
Chaerophyllum aromaticum
Chaerophyllum aureum
Chaerophyllum bulbosum
Chaerophyllum hirsutum
Chaerophyllum temulum
Chamaecytisus ratisbonensis
Chamaecytisus supinus
Chelidonium majus
Chenopodium album
Chenopodium album agg.
Chenopodium album subsp. album
Chenopodium album subsp. pedunculare
Chenopodium bonus-henricus
Chenopodium ficifolium
Chenopodium foliosum
Chenopodium glaucum
Chenopodium hybridum
Chenopodium murale
Chenopodium opulifolium
Chenopodium polyspermum
Chenopodium rubrum
Chenopodium sp.
Chenopodium striatiforme
Chenopodium strictum
Chenopodium suecicum
Chenopodium vulvaria
Chimaphila umbellata
Chondrilla juncea
Chrysosplenium alternifolium
Chrysosplenium oppositifolium