Convolvulus arvensis
Field Bindweed
Coprinus comatus
Shaggy Inkcap
Coprinus micaceus
Glistening Inkcap
Coprinus niveus
Snowy Inkcap
Coprinus picaceus
Magpie Inkcap
Cordyceps militaris
Scarlet Caterpillarclub
Cornus capitata
Bentham's Dogwood
Cornus sanguinea
Dogwood
Corylus avellana
Hazel
Cotoneaster integrifolius
Entire-leaved Cotoneaster
Crassula helmsii
New Zealand Pigmyweed
Crataegus laevigata
Midland Hawthorn
Crataegus monogyna
Hawthorn
Crataegus rhipidophylla
Crepidotus spp.
Crepis biennis
Rough Hawk's-beard
Crepis capillaris
Smooth Hawk's-beard
Crepis foetida
Stinking Hawk's-beard
Crepis vesicaria
Beaked Hawk's-beard
Crithmum maritimum
Rock Samphire
Crocosmia x crocosmiiflora
Montbretia
Crocus neapolitanus
Spring Crocus
Crocus nudiflorus
Autumn Crocus
Crocus speciosus
Bieberstein's Crocus