Mimulus lewisii “Purple Monkeyflower” Phrymaceae (Scrophulariaceae)

Great Burn, Lolo National Forest, MT
July 10, 2015
Robert Niese

This species of monkeyflower was named after the naturalist and explorer, Meriwether Lewis (of Lewis and Clark), who discovered it in Montana, at the headwaters of the Missouri River. Although Lewis was not formally trained as a botanist, he collected and described hundreds of plant species, many of which were completely new to science at the time. Specimens of this particular plant, however, were lost in a flood and never made it back to Washington DC where they would have been cataloged, named, and formally described by Frederick Pursh. Instead, using only Lewis’s descriptions in his journal, Pursh was able to define this plant as a new species!