Candle Orchid 
Cape Ricegrass 
Cape-Pondweed 
Capitate Galingale 
Carex aureolensis 
Carex disticha 
Carex hallerana 
Carex hispida 
Carex hoodii 
Carex pachystylis 
Carex pendula 
Carex spectabilis 
Caribbean Agave 
Caribbean False Helmet Orchid 
Carnauba palm 
Carniolan Lily 
Carolina Dayflower 
Caruncle Bearing Lepanthes 
Cat-face orchid 
Catasetum ochraceum 
Catasetum saccatum 
Catesby's lily 
Cattleya maxima 
Cattleya purpurata