Double-edged Lance Pleurothallis 
Dove Flower 
Downy rattlesnake plantain 
Dracula carcinopsis 
Dracula dalessandroi 
Dracula lafleurii 
Dusky fingers 
Dwarf Psymorchis 
Dwarf snail orchid 
Earina aestivalis 
Early coralroot 
Early marsh-orchid 
Early purple orchid 
Early Spider-Orchid 
Eastern early-purple orchid 
Eastern Mantis Orchid 
Eastern mantis orchid 
Eastern wallflower orchid 
Eduard's Porroglossum 
Egg-in-a-nest orchid 
Elder-flowered Orchid 
Elleanthus aurantiacus 
Elleanthus hymenophorus 
Elleanthus robustus