Spiranthes occupying moist sites in Ash Meadows, Nye County, Nevada, which have been cited as S. romanzoffiana Cham., are described as the new species S. infernalis Sheviak. This species is distinguished by very small flowers with free perianth segments spreading at the apices, the segments ochraceous-ochroleucous with fleshy, emerald-green bases, and lips broadest near the middle.