Calotropis gigantea
Giant Calotrope
Caltha palustris
Marsh-marigold
Calycanthus occidentalis
Californian Allspice
Calystegia pulchra
Hairy Bindweed
Calystegia sepium
Hedge Bindweed
Calystegia silvatica
Large Bindweed
Calystegia soldanella
Sea Bindweed
Camellia
Camellia (double)
Camellia japonica
Camellia
Camonea umbellata
Yellow Wood Rose
Campanula bononiensis
Pale Bellflower
Campanula cervicaria
Bristly Bellflower
Campanula glomerata
Clustered Bellflower
Campanula latifolia
Giant Bellflower
Campanula patula
Spreading Bellflower
Campanula persicifolia
Peach-leaved Bellflower
Campanula portenschlagiana
Adria Bellflower
Campanula poscharskyana
Trailing Bellflower
Campanula rapunculoides
Creeping Bellflower
Campanula rotundifolia
Harebell
Campanula trachelium
Nettle-leaved Bellflower
Cantharanthus roseus
Pink Periwinkle
Capsella bursa-pastoris
Shepherd's-purse
Capsicum annum
Sweet Pepper
Capsicum frutescens
Guinea Pepper
Cardamine corymbosa
New Zealand Bitter-cress
Cardamine flexuosa
Wavy Bitter-cress
Cardamine hirsuta
Hairy Bitter-cress
Cardamine impatiens
Narrow-leaved Bitter-cress
Cardamine pratensis
Cuckooflower
Cardamine quinquefolia
Whorled Coralroot
Carduus crispus
Welted Thistle
Carduus nutans
Musk Thistle
Carduus tenuiflorus
Slender Thistle
Carex caryophyllea
Spring-sedge
Carex demissa
Common Yellow-sedge
Carex disticha
Brown Sedge
Carex flacca
Glaucous Sedge
Carex montana
Soft-leaved Sedge
Carex muricata
Small-fruited Prickly-sedge
Carex nigra
Common Sedge
Carex pallescens
Pale Sedge
Carex panicea
Carnation Sedge
Carex paniculata
Greater Tussock-sedge
Carex pendula
Pendulous Sedge
Carex remota
Remote Sedge
Carex riparia
Greater Pond-sedge
Carex rostrata
Bottle Sedge
Carex sylvatica
Wood-sedge
Carex vaginata
Sheathed Sedge
Carex vulpina
True Fox-sedge
Carissa macrocarpa
Natal Plum
Carlina vulgaris
Carline Thistle
Carpobrotus edulis
Hottentot-fig
Carum carvi
Caraway
Cascabela thevetia
Yellow Oleander
Cassia artemisioides
Feathery Cassia
Castanea sativa
Sweet Chestnut
Ceanothus dentatus
Ceanothus
Ceanothus sp.
Ceanothus
Ceanothus thyrsiflorus
Creeping Blueblossom
Celosia argentea
Silver Cock's Comb
Centaurea cyanus
Cornflower
Centaurea debeauxii
Slender Knapweed
Centaurea montana
Perennial Cornflower
Centaurea nigra
Common Knapweed
Centaurea scabiosa
Greater Knapweed
Centaurium erythraea
Common Centaury
Centaurium littorale
Seaside Centaury
Centaurium portense
Perennial Centaury