About Erythranthe primuloides (Benth.) G.L.Nesom & N.S.Fraga
Erythranthe primuloides is a perennial herb that grows in low patches or mosslike mats, spreading via rhizomes and stolons. Its stems are no more than roughly 12 centimeters long. Leaves are arranged oppositely, and vary in shape; their color ranges from green to purple-green, and they may be shaggy-hairy to hairless, reaching up to 5 centimeters in length. Flowers grow on an erect pedicel. The tubular base of the flower is enclosed in a hairless calyx made of sepals. The bright yellow flower is up to 2 centimeters long, divided into an upper lip with two lobes and a lower lip with three. Each of the three lower lobes is usually marked with red dots. This species is native to the western United States, including California. It grows in wet habitats in mountain and plateau areas, such as stream banks. In the eastern Sierra Nevada, it occurs across a very broad elevation range, from 2,000 to 11,000 feet (610 to 3,350 m).