Cotoneaster x 'Hessei' Cotoneaster x 'Tom Thumb'
Cotoneaster acutifolius Cotoneaster adpressus
Cotoneaster affinis Cotoneaster apiculatus
Cotoneaster congestus Cotoneaster conspicuus
Cotoneaster conspicuus 'Decorus' Cotoneaster dammeri
Cotoneaster dammeri 'Coral Beauty' Cotoneaster dammeri 'Mooncreeper'
Cotoneaster dammeri 'Skogholm' Cotoneaster dammeri var. radicans
Cotoneaster forrestii Cotoneaster horizontalis
Cotoneaster horizontalis 'Perpusillus' Cotoneaster horizontalis 'Robusta'
Cotoneaster horizontalis 'Variegatus' Cotoneaster lacteus
Cotoneaster linearifolius Cotoneaster lucidus
Cotoneaster microphyllus 'Emerald Spray' Cotoneaster multiflorus
Cotoneaster nanshan Cotoneaster sabrinus
Cotoneaster salicifolius Cotoneaster salicifolius 'Repens'
Cotoneaster salicifolius 'Scarlet Leader' Cotoneaster salicifolius var. floccosus
Cotoneaster suecicus 'Erlinda' Cotula coronopifolia
Cotyledon orbiculata Couroupita guianensis
Coursetia glandulosa Crambe cordifolia
Crassula arborescens Crassula capitella 'Campfire'
Crassula muscosa Crassula muscosa pseudolycopodiodes 'Princess Pine'
Crassula ovata Crassula ovata 'Pink Beauty'
Crassula ovata 'Tricolor' Crassula ovata 'Variegata'
Crassula perfoliata var. falcata Crassula pubescens radicans
Crataegus aestivalis Crataegus ambigua
Crataegus crus-galli Crataegus crus-galli 'Hooks'
Crataegus crus-galli var. inermis Crataegus laevigata
Crataegus laevigata 'Paul's Scarlet' Crataegus x lavallei
Crataegus mollis Crataegus monogyna
Crataegus monogyna 'Inermis Compacta' Crataegus paucispina
Crataegus phaenopyrum Crataegus punctata
Crataegus viridis 'Winter King' Crescentia cujete
Crinodendron patagua Crinum amabile
Crinum americanum Crinum asiaticum 'Cuprifolium'
Crinum asiaticum var. procerum Crinum asiaticum var. sinicum
Crinum bulbispermum Crinum moorei
Crinum x powellii Crinum x powellii 'Ellen Bosanquet'
Crinum spp. Crithmum maritimum
Crocosmia x crocosmiiflora Crocosmia x crocosmiiflora 'Emily McKenzie'
Crocosmia x crocosmiiflora 'George Davidson' Crocosmia x crocosmiiflora 'Lucifer'
Crocosmia x crocosmiiflora 'Norwich Canary' Crocosmia x crocosmiiflora 'Wallerton Red'
Crocosmia masonorum Crocus 'Violet Queen'
Crocus chrysanthus 'Advance' Crocus goulimyi
Crocus x hybridus Crocus pulchellus
Crocus sativus Crocus speciosus
Crocus tommasinianus Crocus tommasinianus 'Barr's Purple'
Crocus vernus ssp. vernus 'Jeanne d'Arc' Crossandra infundibuliformis
Crossandra infundibuliformis 'Florida Summer' Crossandra spp.
Crossopetalum ilicifolium Crowea exalata
Cryptanthus bivittatus Cryptocarya obovata
Cryptocarya rubra