Ibapah Springparsley          

Idaho Bentgrass      

Idaho Blue-eyed Grass      

Idaho Fescue      

Idaho Fleabane          

Idaho Gumweed          

Idahoa          

Illinois Bundleflower      

Illinois Pondweed          

Imberis Woodyaster          

Incense Cedar      

Inchhigh Lupine          

Indian Blanket      

Indian Breadroot          

Indian Goosegrass          

Indian Hedgemustard          

Indian Lovegrass          

Indian Mallow          

Indian Milkvetch          

Indian Paintbrush          

Indian Ricegrass      

Indian Rushpea          

Indian Springparsley          

Indian Tobacco          

Indianhemp      

Inflated Grasswidow          

Inland Bluegrass          

Inland Muilla          

Inland Sedge      

Intermediate Needle And Thread          

Intermediate Wheatgrass      

Intermountain Bedstraw          

Intermountain Clover          

Intermountain Indian Breadroot          

Intermountain Lupine          

Intermountain Milkwort          

Intermountain Mousetail          

Intermountain Rubberweed          

Inyo Biscuitroot          

Inyo Blazingstar          

Inyo Buckwheat          

Inyo Frasera          

Inyo Gilia          

Inyo Milkvetch