Corallorhiza odontorhiza
 Corallorhiza odontorhiza common name Fall coral-root or small-flowered coral-root is a species of orchid widespread across the eastern half of the United States and reported also from Mexico Central America Quebec and Ontario. In North America it occurs in forested areas up to an elevation of 2800 m (9300 feet).Corallorhiza odontorhiza is a non-photosynthetic species with no chlorophyll. Hence it relies on fungi in the soil to supply it with nutrients.