Winged Monkey Flower
Mimulus alatus
From Missouri Plants
This species is recognized by its blue-violet flowers, winged, 4-sided stems, and leaves with distinct stalks.
Plants of this genus are easy to ID in the field because of their large, showy, irregular flowers. The yellow beard on the corolla serves as a guide to bring insects to the flower and the lobes of the flower serve as landing platforms.
Flowering - June - September.
Habitat - Stream borders, low wet woods, wet meadows, ditches, springs.
Origin - Native to U.S.