Bryonia dioica
White Bryony
Buchozia japonica
Snowrose
Bupleurum rotundifolium
Thorow-wax
Buxus sempervirens
Box
Cakile maritima
Sea Rocket
Caladium bicolor
Heart of Jesus
Caladium praetermissum
Hilo Beauty
Calathea lutea
Bijao
Calathea zebrina
Zebra Plant
Calliandra surinamensis
Pink Powder Puff
Callicarpa pedunculata
Beautyberry
Callindra houstoniana
Callitriche stagnalis
Common Water-starwort
Calluna vulgaris
Heather
Calocedrus decurrens
Californian Incense-cedar
Calotropis gigantea
Giant Calotrope
Caltha palustris
Marsh-marigold
Calystegia silvatica
Large Bindweed
Calystegia soldanella
Sea Bindweed
Camonea umbellata
Yellow Wood Rose
Campanula latifolia
Giant Bellflower
Campanula patula
Spreading Bellflower
Campanula poscharskyana
Trailing Bellflower
Campanula trachelium
Nettle-leaved Bellflower
Capsicum annum
Sweet Pepper
Cardamine flexuosa
Wavy Bitter-cress
Cardamine hirsuta
Hairy Bitter-cress
Cardamine impatiens
Narrow-leaved Bitter-cress
Cardamine occulta
Cryptic Bittercress
Cardamine pratensis
Cuckooflower
Carduus crispus
Welted Thistle
Carduus nutans
Musk Thistle
Carduus tenuiflorus
Slender Thistle
Carex flacca
Glaucous Sedge
Carex montana
Soft-leaved Sedge
Carex pallescens
Pale Sedge
Carex rostrata
Bottle Sedge
Carex strigosa
Thin-spiked Wood-sedge
Carex sylvatica
Wood-sedge
Carex vulpina
True Fox-sedge
Carissa macrocarpa
Natal Plum
Carpinus betulus
Hornbeam
Caryota mitis
Fishtail palm
Cassia fistula
Golden Shower Tree
Castanea sativa
Sweet Chestnut
Castilla elastica
Panama Rubber Tree
Casuarina equisetifolia
Coastal She-oak
Catapodium rigidum
Fern-grass
Causonis trifolia
Bush Grape
Cedrus deodara
Deodar
Cedrus libani
Cedar-of-Lebanon
Centaurea scabiosa
Greater Knapweed
Centaurium littorale
Seaside Centaury
Centaurium portense
Perennial Centaury
Centratherum punctatum
Brazilian bachelor's button
Centrosema pubescens
Butterfly Pea
Cephalanthera damasonium
White Helleborine
Cerastium fontanum
Common Mouse-ear
Cerastium semidecandrum
Little Mouse-ear
Ceratocapnos claviculata
Climbing Corydalis
Ceratophyllum demersum
Rigid Hornwort
Ceratostigma plumbaginoides
Cercidiphyllum japonicum
Katsura
Cestrum nocturnum
Night-blooming Jessamine
Chaenorhinum minus
Small Toadflax
Chaenorhinum origanifolium
Malling Toadflax
Chaerophyllum temulum
Rough Chervil
Chamaecyparis lawsoniana
Lawson's Cypress
Chamaecyparis obtusa
Hinoki Cypress
Chamaenerion angustifolium
Rosebay Willowherb