HEDEOMA TODSENII
Oliva, Jon Paul. 1999. A preliminary habitat analysis using GIS and geospatial imagery: potential distribution of Hedeoma todsenii, a rare endangered plant. . 2 p.
Sivinski, R. 1994. Todsen's pennyroyal (Hedeoma todsenii), 1994 progress report (Section 6 Segment 9).
Irving, Dr. Robert S. 1985. Todsen's Pennyroyal (Hedeoma todsenii R.S. Irving) Recovery Plan. U.S. Fish and Wildlife Service, Albuquerque, New Mexico. March 1985. 30 pp.
Taylor, R. V. 2001. Endangered species management plan for Todsen's pennyroyal at White Sands Missile Range, New Mexico. White Sands Missle Range, Division of Environmental Stewardship.. 63 p.
Taylor, R. V. 2003. A botanical rarity on the range. Submitted to White Sands Missile Ranger Newspaper. .
Sivinski, R. 1996. Section 6, segment 10 annual report of botanical work accomplished by NM Forestry and Natural Resources Dept. for Fish and Wildlife Service, Albuquerque, NM.
Gaines, K. H., and S. Boczkiewicz. 1995. Specimen tag information from the University of New Mexico Herbarium collection, Albuquerque.
Boczkiewicz, S. 1995. Specimen tag information from the New Mexico State University herbarium, Las Cruces. 14 December 1995.
BLM 1994. Todsen's Pennyroyal 1994 Progress Report. 73p.
Sivinski, R. 2007. Endangered Plant Study. Sante Fe, NM: New Mexico Forestry Division; Performance and Progress Report E-9-21. 120p.