The Palmer's penstemon (Penstemon palmeri) belongs to Scrophulariaceae (the Figwort family). It is a perennial herb that is native to the western United States. This herb grows in desert, upland, mountain and roadsides, and it can reach 1.5-2 m in height. The leaves are triangular, glaucous blue-green, serrated and arranged in opposite. The pale pink or lavender flowers bloom in the panicle or raceme on tall, upright flower stalk in spring through summer. The corolla is tubular, large-mouthed, and have two upper lobes and three reflexed, magenta-lined lower lobes.