Spiranthes infernalis
 Spiranthes infernalis common name Ash Meadows ladies'-tresses is a rare and probably endangered species of orchid known from only four locations in Nevada all close to one another. Type locale is inside Ash Meadows National Wildlife Refuge in Nye County approximately 90 miles (140 km) WNW of Las Vegas. The site is a seasonally wet meadow.Spiranthes infernalis is a terrestrial herb up to 40 cm (16 inches) tall. It has tuberous roots. Leaves are lanceolate up to 15 cm (6 inches) long.