Lomandra multyflora 
Long-lipped Serapias 
Long-Petal Sudamerlycaste 
Long-Pointed Petals Lepanthes 
Longtube iris 
Loose-flowered Orchid 
Lycaste bradeorum 
Lycaste cruenta 
Lycaste dowiana 
Lycaste macrophylla 
Lycaste tricolor 
Lycomormium ecuadorense 
Macodes petola 
Macroclinium escobarianum 
Macroclinium ramonense 
Maianthemum dilatatum 
Maianthemum stellatum 
Mainland striped greenhood 
Malaxis versicolor 
Mallee beard orchid 
Man Orchid 
Many-flowered Fringe Lily 
Marengo Orchid 
Maroonhood