Penstemon rhizomatosus
 Penstemon rhizomatosus is a rare species of flowering plant in the plantain family known by the common name rhizome beardtongue. It is endemic to Nevada in the United States where it occurs only in the Schell Creek Range of White Pine County.This plant was first described in 1998. It is a perennial herb growing up to about 28 centimeters in maximum height. The clusters of stems arise from a woody caudex and thick taproot. The leaves are lance-shaped and borne on winged petioles.