Goldbachia pendula 
Greater Sea-kale 
Hairy bittercress 
Hairy Rockcress 
Hare's-ear Mustard 
Hedge-mustard 
Heliotropium hirsutissimum 
Hesperis campicarpa 
Hesperis pendula 
Heterocaryum subsessile 
Hoary alyssum 
Hoary Stock 
Horseradish 
Hypecoum trilobum 
Iberis ciliata 
Iberis odorata 
Iberis procumbens 
Icarian Treacle Mustard 
Indian Hedgemustard 
Isatis armena 
Isatis floribunda 
Isatis lusitanica 
Isatis microcarpa 
Island Wallflower