Ephedra cutleri, the Navajo ephedra or Cutler's jointfir, is a species of Ephedra that is native to the Southwestern United States (Arizona, New Mexico, Utah, Colorado, Nevada, Wyoming).DescriptionThe rhizomatous shrubs form erect clumps, .25–1.5 metres (0.82–4.92 ft) tall and 3–5 metres (9.8–16.4 ft) wide. It grows on flat and dry sandy areas, and occasionally on rocky slopes.TaxonomyThe plant was originally described by Robert Hibbs Peebles in 1940. It was placed in section Ephedra sect.