Erysimum menziesii
 Erysimum menziesii is a species of wallflower known by the common name Menzies' wallflower. This rare plant is endemic to California. It is found only in the declining beach sand dune habitat in three areas on California coastline in Humboldt Mendocino and Monterey Counties. It is listed as an endangered species on the California state and federal levels. There are three to four subspecies depending on the authority and each is rare.