Labrador Indian Paintbrush          

Labrador Lousewort          

Lagotis          

Lanceleaf Beardtongue          

Lanceleaf Figwort          

Langsdorfs Lousewort          

Lapland Lousewort          

Lapoint Beardtongue          

Larchleaf Beardtongue          

Large Beardtongue          

Largeflower Bush Monkeyflower          

Largeflower Speedwell          

Largeflower Yellow False Foxglove          

Late-flowering Yellow Rattle          

Laynes Monkeyflower          

Least Snapdragon          

Lemhi Penstemon          

Lemmons Indian Paintbrush          

Lemmons Keckiella          

Leonards Beardtongue