Genus Oenothera, commonly known as evening primrose, is a diverse and fascinating group of plants with over 145 species. Some synonyms for Genus Oenothera include sundrops, moonflowers, and primroses. These plants are native to North and South America and are most known for their showy, yellow flowers that bloom at night. Evening primrose has significant medicinal value, with the seeds containing high levels of essential fatty acids and other compounds that help to reduce inflammation in the body. These plants are also an important food source for many native animal species, including several species of moths that are solely dependent on them for survival.