Citrus x ponderosa

Cladanthus arabicus

Cladium mariscoides

Cladrastis kentukea

Cladrastis kentukea 'Perkin's Pink'

Claytonia virginica

Cleistocactus jujuyensis

Cleistocactus strausii

Cleistocactus winteri ssp. colademono

Clematis 'Aljonushka'

Clematis 'Anita'

Clematis 'Arabella'

Clematis 'Ascotiensis'

Clematis 'Beautiful Bride'

Clematis 'Bfccfla'

Clematis 'Bill Mackenzie'

Clematis 'Black Prince'

Clematis 'Blekitny Aniol'

Clematis 'Carmencita'

Clematis 'Chatsworth'

Clematis 'Cleminov 51'

Clematis 'Cloudburst'

Clematis 'Comtesse de Bouchaud'

Clematis 'Daybreak'

Clematis 'Deborah Dahl'