Corybas aconitiflorus 
Cowhorn Agave 
Cowl-carrying Maxillaria 
Cowslip Orchid 
Cranefly Orchid 
Creeping Lady's-tresses 
Cretan Orchis 
Crimson cattleya 
Crinum amabile 
Crinum latifolium 
Crocus biflorus 
Crocus boryi 
Crocus cancellatus 
Crocus graveolens 
Crocus henrikii 
Crocus hermoneus 
Crocus korolkowii 
Crocus mazziaricus 
Crocus niveus 
Crocus ochroleucus 
Crocus pallasii 
Crocus scharojanii 
Crocus veluchensis 
Crossoglossa sotoana