Hedeoma todsenii
 Hedeoma todsenii is a rare species of flowering plant in the mint family known by the common name Todsen's pennyroyal or Todsen's false pennyroyal. It is endemic to New Mexico in the United States where it occurs in the San Andres and Sacramento Mountains. It is federally listed as an endangered species of the United States.This plant was discovered on the White Sands Missile Range in 1978 by Thomas K. Todsen (1918-2010) and described to science and named for him the following year.