Erythranthe purpurea is a species of monkeyflower known by the common name little purple monkeyflower. It was formerly known as Mimulus purpureus.[1] [2] [3]
It is native to California, where it is known from only about 20 occurrences in the San Bernardino Mountains; it is also known from Baja California. It grows in moist habitat in mountain meadows, including the quartz pebble plain habitat type near Big Bear Lake.
Erythranthe purpurea is a petite annual herb growing just a few centimeters tall. The oppositely arranged oval leaves are under 2 centimeters long each. Each flower is borne on a very thin, erect pedicel which may be several centimeters tall.
The tubular base of the flower is encapsulated in a reddish ribbed calyx of sepals with tiny pointed lobes. The flower is roughly a centimeter long with a wide mouth divided into an upper and lower lip. The flower is pink, the upper lip usually a darker shade than the lower, and there are yellow stripes or streaks in the mouth.