Crow garlic 
Crowded Maxillaria 
Crowpoison 
Cryptocentrum latifolium 
Curled Lepanthes 
Curled Pleurothallis 
Cyclopogon comosus 
Cymbidiella flabellata 
Cymbidium bicolor pubescens 
Cymbidium finlaysonianum 
Cymbidium lowianum 
Cymboglossum cymbidiifolium 
Cynorkis fastigiata 
Cypress-knee helmet orchid 
Cypripedium calceolus 
Cypripedium tibeticum 
Cyprus Bee Orchid 
Cyrillic garlic 
Cyrtochilum aemulum 
Cyrtochilum annulare 
Cyrtochilum auropurpureum 
Cyrtochilum divaricatum 
Cyrtochilum examinans 
Cyrtochilum halteratum