Iris nigricans 
Iris orientalis 
Iris paradoxa 
Iris petrana 
Iris planifolia 
Iris purdyi 
Iris setosa 
Iris sintenisii 
Iris suaveolens 
Iris versicolor 
Iris vicaria 
Iris westii 
Iris × germanica 
Isochilus aurantiacus 
Italian garlic 
Italian Gladiolus 
Italian orchid 
Japanese Iris 
Japanese iris 
Jenkinss Dendrobium 
Jericho Allium 
Jewel Orchid 
Johnsons Grass Tree 
Jonquil or Rush daffodil