An exception is the yellowish green species Corallorhiza trifida, which has some chlorophyll and is able to fix CO2. However, this species also depends primarily on fungal associations for carbon acquisition.
While most species of Corallorhiza are devoid of chlorophyll and cannot fix CO2, the yellowish green species Corallorhiza trifida possesses a small amount of chlorophyll and is capable of fixing CO2.  However, this species also relies heavily on fungal associations for obtaining carbon.