Columnea 'Gold Heart'

Columnea 'Inferno'

Columnea 'Janella'

Columnea 'Light Prince'

Columnea 'Louise Harris'

Columnea 'Sundancer'

Columnea colombiana

Columnea gloriosa

Columnea hybrid

Columnea pulchra 'Orange Crush'

Columnea schiedeana

Comandra umbellata

Comanthosphace stellipila 'Shiro-Sanko-Fu'

Comptonia peregrina

Conandron ramondioides Double-flowered form

Conocarpus erectus

Conocarpus erectus var. sericeus

Conoclinium coelestinum

Conoclinium coelestinum 'Cori'

Conoclinium coelestinum 'Wayside Variety'

Convallaria majalis

Convallaria majalis 'Albostriata'

Convallaria majalis 'Bordeaux'

Convallaria majalis 'Fortin's Giant'

Convallaria majalis 'Rosea'