Mimulus guttatus, commonly known as the yellow monkeyflower, is a flowering plant native to North America. It typically grows in wet habitats, such as stream banks and meadows, and features bright yellow flowers with distinctive reddish-brown spots. The plant can reach heights of 30 to 60 centimeters and has a sprawling growth habit. This species is often studied in ecological and evolutionary research due to its diverse adaptations and variations. Mimulus guttatus is also a model organism for genetic studies, particularly in understanding the mechanisms of speciation and hybridization among plants.