Bryonia dioica
White Bryony
Buchozia japonica
Snowrose
Bunchozia armeniaca
Cansaboca
Bupleurum rotundifolium
Thorow-wax
Butomus umbellatus
Flowering-rush
Buxus sempervirens
Box
Caesalpinia pulcherrima
Poinciana
Cakile maritima
Sea Rocket
Caladium bicolor
Heart of Jesus
Caladium praetermissum
Hilo Beauty
Calamagrostis canescens
Purple Small-reed
Calamagrostis epigejos
Wood Small-reed
Calathea crotalifera
Rattlesnake Plant
Calathea lutea
Bijao
Calathea zebrina
Zebra Plant
Calendula officinalis
Pot Marigold
Calliandra surinamensis
Pink Powder Puff
Calliandra tergemina
Dwarf Powder Puff
Callicarpa pedunculata
Beautyberry
Callindra houstoniana
Callistephus chinensis
China aster
Callitriche brutia
Pedunculate Water-starwort
Callitriche sp.
Callitriche stagnalis
Common Water-starwort
Calluna vulgaris
Heather
Calocedrus decurrens
Californian Incense-cedar
Calopogonium mucunoides
Calopo
Calotropis gigantea
Giant Calotrope
Caltha palustris
Marsh-marigold
Calycanthus occidentalis
Californian Allspice
Calystegia pulchra
Hairy Bindweed
Calystegia sepium
Hedge Bindweed
Calystegia silvatica
Large Bindweed
Calystegia soldanella
Sea Bindweed
Camassia quamash
Camellia
Camellia (double)
Camellia japonica
Camellia
Camonea umbellata
Yellow Wood Rose
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
Campanula portenschlagiana
Adria Bellflower
Campanula poscharskyana
Trailing Bellflower
Campanula rapunculoides
Creeping Bellflower
Campanula rotundifolia
Harebell
Campanula trachelium
Nettle-leaved Bellflower
Campyloneurum angustifolium
Narrow Strapfern
Cantharanthus roseus
Pink Periwinkle
Capsella bursa-pastoris
Shepherd's-purse
Capsicum annum
Sweet Pepper
Capsicum frutescens
Guinea 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
Cardiocrinum giganteum
Cardiospermum halicacabum
Lesser Balloon Vine
Carduus crispus
Welted Thistle
Carduus nutans
Musk Thistle
Carduus tenuiflorus
Slender Thistle
Carex acuta
Slender Tufted-sedge
Carex acutiformis
Lesser Pond-sedge
Carex arenaria
Sand Sedge
Carex binervis
Green-ribbed Sedge