Crithmum maritimum
Rock Samphire
Crocosmia x crocosmiiflora
Montbretia
Crocus laevigatus
Crocus (laevigatus)
Crocus neapolitanus
Spring Crocus
Crocus nudiflorus
Autumn Crocus
Crocus tommasinianus
Early Crocus
Crocus x luteus
Yellow Crocus
Cruciata laevipes
Crosswort
Cryptogramma crispa
Parsley Fern
Cryptomeria japonica
Japanese Red-cedar
Cupressus nootkatensis
Nootka Cypress
Cuscuta epithymum
Dodder
Cuscuta europaea
Greater Dodder
Cyathea arborea
West Indian Treefern
Cycas circinalis
Queen Sago
Cycas revoluta
Sago Palm
Cydonia oblonga
Quince
Cymbalaria muralis
Ivy-leaved Toadflax
Cymbopogon citratus
West Indian Lemon Grass
Cynara cardunculus
Cardoon
Cynoglossum officinale
Hound's-tongue
Cynosurus cristatus
Crested Dog's-tail
Cyperus alternifolius
Cyperus fuscus
Brown Galingale