Calamagrostis × acutiflora
Calamagrostis arundinacea
Calamagrostis canescens
Calamagrostis epigejos
Calamagrostis pseudophragmites
Calamagrostis sp.
Calamagrostis stricta
Calamagrostis villosa
Calendula arvensis
Calendula officinalis
Calla palustris
Callistephus chinensis
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
Caltha sp.
Calystegia pulchra
Calystegia sepium
Camelina alyssum
Camelina microcarpa
Camelina microcarpa subsp. pilosa
Campanula bononiensis
Campanula cervicaria
Campanula glomerata
Campanula glomerata subsp. glomerata
Campanula patula
Campanula persicifolia
Campanula rapunculoides
Campanula rotundifolia
Campanula rotundifolia agg.
Campanula sibirica
Campanula trachelium
Cannabis sativa
Cannabis sativa var. spontanea
Capsella bursa-pastoris
Caragana arborescens
Cardamine amara
Cardamine dentata
Cardamine flexuosa
Cardamine hirsuta
Cardamine chelidonia
Cardamine impatiens
Cardamine pratensis
Cardamine pratensis agg.
Cardamine trifolia
Carduus × leptocephalus
Carduus × sepincola
Carduus acanthoides
Carduus crispus
Carduus nutans
Carduus personata
Carex × alsatica
Carex × involuta
Carex acuta
Carex acuta subsp. acuta
Carex acuta subsp. intermedia
Carex acutiformis
Carex appropinquata
Carex bohemica
Carex brizoides
Carex buekii
Carex canescens
Carex caryophyllea
Carex cespitosa
Carex curvata
Carex davalliana
Carex demissa
Carex diandra
Carex digitata
Carex digitata var. pallens
Carex dioica
Carex distans
Carex disticha
Carex echinata
Carex elata
Carex elongata
Carex ericetorum
Carex flacca
Carex flava
Carex flava agg.
Carex hartmanii
Carex hirta
Carex hostiana
Carex humilis
Carex chordorrhiza
Carex lasiocarpa
Carex leersii
Carex lepidocarpa
Carex leporina
Carex limosa
Carex magellanica
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 pauciflora
Carex pendula
Carex pilulifera
Carex praecox
Carex pseudocyperus
Carex pulicaris
Carex remota
Carex riparia
Carex rostrata
Carex sp.
Carex spicata
Carex sylvatica
Carex tomentosa
Carex umbrosa
Carex vesicaria
Carex vulpina
Carlina acaulis
Carlina acaulis subsp. acaulis
Carlina acaulis subsp. caulescens
Carlina biebersteinii
Carlina vulgaris
Carpinus betulus
Carum carvi
Castanea sativa
Catabrosa aquatica
Caucalis platycarpos
Centaurea × fleischeri
Centaurea × similata
Centaurea cyanus
Centaurea jacea
Centaurea jacea agg.
Centaurea jacea subsp. angustifolia
Centaurea jacea subsp. jacea
Centaurea montana
Centaurea montana agg.
Centaurea nigra
Centaurea oxylepis
Centaurea phrygia agg.
Centaurea pseudophrygia
Centaurea scabiosa
Centaurea sp.
Centaurea stoebe
Centaurea stoebe subsp. australis
Centaurea stoebe subsp. stoebe
Centaurea triumfetti
Centaurium erythraea
Centaurium littorale
Centaurium pulchellum
Centunculus minimus
Cephalanthera damasonium
Cephalanthera longifolia
Cephalanthera rubra
Cerastium arvense
Cerastium brachypetalum
Cerastium glomeratum
Cerastium glutinosum
Cerastium holosteoides
Cerastium holosteoides subsp. vulgare
Cerastium semidecandrum
Cerastium tomentosum
Ceratophyllum demersum
Ceratophyllum submersum
Cerinthe minor
Cicerbita alpina
Cicerbita macrophylla
Cicerbita macrophylla subsp. uralensis
Cicuta virosa
Cichorium endivia
Cichorium intybus
Circaea × intermedia
Circaea alpina
Circaea lutetiana
Cirsium × affine
Cirsium × hybridum
Cirsium × sessile
Cirsium × subalpinum
Cirsium × tataricum
Cirsium × wankelii
Cirsium acaulon
Cirsium arvense
Cirsium canum
Cirsium eriophorum
Cirsium heterophyllum
Cirsium oleraceum
Cirsium palustre
Cirsium rivulare
Cirsium vulgare
Citrullus lanatus
Cladium mariscus
Claytonia sibirica
Clematis recta
Clematis vitalba
Clinopodium vulgare
Cnidium dubium
Coeloglossum viride
Cochlearia danica
Coleanthus subtilis
Colchicum autumnale
Comarum palustre
Commelina communis
Conium maculatum
Conium sp.
Conringia orientalis
Consolida ajacis
Consolida hispanica
Consolida regalis
Convallaria majalis
Convolvulus arvensis
Convolvulus sp.
Conyza canadensis
Corallorhiza trifida
Cornus mas
Cornus sanguinea
Cornus sanguinea subsp. sanguinea
Cornus sericea
Corydalis cava
Corydalis intermedia
Corydalis solida
Corydalis sp.
Corylus avellana
Corynephorus canescens
Cosmos bipinnatus
Cotoneaster integerrimus
Cotoneaster sp.
Crambe tataria
Crataegus × calycina
Crataegus × fallacina
Crataegus × macrocarpa
Crataegus × media
Crataegus laevigata
Crataegus monogyna
Crataegus rhipidophylla
Crataegus sp.
Crepis biennis
Crepis capillaris
Crepis mollis
Crepis mollis subsp. succisifolia
Crepis paludosa
Crepis praemorsa
Crepis tectorum
Cruciata laevipes
Cruciata verna
Cucumis sativus
Cucurbita pepo
Cucurbita sp.
Cuscuta campestris
Cuscuta epilinum
Cuscuta epithymum
Cuscuta europaea
Cuscuta sp.
Cyclamen purpurascens
Cymbalaria muralis
Cynodon dactylon
Cynoglossum officinale
Cynosurus cristatus
Cyperus eragrostis
Cyperus flavescens
Cyperus fuscus
Cyperus michelianus
Cypripedium calceolus
Cystopteris fragilis
Cytisus nigricans
Cytisus scoparius
Chaenorhinum origanifolium
Chaerophyllum aromaticum
Chaerophyllum aureum
Chaerophyllum bulbosum
Chaerophyllum hirsutum
Chaerophyllum temulum
Chamaecyparis lawsoniana
Chamaecyparis pisifera
Chamaecytisus austriacus
Chamaecytisus ratisbonensis
Chamaecytisus supinus
Chelidonium majus
Chenopodium × pseudostriatum
Chenopodium album
Chenopodium album agg.
Chenopodium album subsp. pedunculare
Chenopodium bonus-henricus
Chenopodium ficifolium
Chenopodium glaucum
Chenopodium hybridum
Chenopodium murale
Chenopodium opulifolium
Chenopodium polyspermum
Chenopodium rubrum
Chenopodium sp.
Chenopodium striatiforme
Chenopodium strictum
Chenopodium suecicum
Chenopodium urbicum
Chenopodium vulvaria
Chimaphila umbellata
Chondrilla juncea
Chorispora tenella
Chrysosplenium alternifolium
Chrysosplenium oppositifolium