Campanula trachelium
Nettle-leaved Bellflower
Cantharanthus roseus
Pink Periwinkle
Capsella bursa-pastoris
Shepherd's-purse
Capsicum annum
Sweet Pepper
Cardamine corymbosa
New Zealand Bitter-cress
Cardamine flexuosa
Wavy Bitter-cress
Cardamine hirsuta
Hairy Bitter-cress
Cardamine impatiens
Narrow-leaved Bitter-cress
Cardamine occulta
Cryptic Bittercress
Cardamine pratensis
Cuckooflower
Cardamine quinquefolia
Whorled Coralroot
Cardiospermum halicacabum
Lesser Balloon Vine
Carduus crispus
Welted Thistle
Carduus nutans
Musk Thistle
Carduus tenuiflorus
Slender Thistle
Carissa macrocarpa
Natal Plum
Carlina vulgaris
Carline Thistle
Carpinus betulus
Hornbeam
Carpobrotus edulis
Hottentot-fig
Carum carvi
Caraway
Cascabela thevetia
Yellow Oleander
Cassia artemisioides
Feathery Cassia
Cassia fistula
Golden Shower Tree
Castanea sativa
Sweet Chestnut