Erythranthe palmeri is a hairy annual herb growing up to about 28 centimeters in maximum height with a thin, spindly stem. The oppositely arranged linear to oval leaves are under 3 centimeters long. The tubular base of the flower is encapsulated in a ribbed calyx of
sepals with pointed lobes. The flower has a narrow throat and wide five-lobed face. It is one or two centimeters long and usually deep pinkish purple with variable yellow and purple markings in the mouth. ==References==