Butomus umbellatus
Flowering-rush
Buxus sempervirens
Box
Cakile maritima
Sea Rocket
Calamagrostis epigejos
Wood Small-reed
Calendula officinalis
Pot Marigold
Callistephus chinensis
China aster
Callitriche sp.
Callitriche stagnalis
Common Water-starwort
Calluna vulgaris
Heather
Calocedrus decurrens
Californian Incense-cedar
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
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