Comastoma tenellum is a species in the Comastoma genus. This name is accepted name for the species in the family Gentianaceae . This species is found in Alaska, Altay, Arizona, Austria, British Columbia, Buryatiya, California, Colorado, Czechoslovakia, East Himalaya, Finland, France, Germany, Greenland, Iceland, Idaho, Irkutsk, Kamchatka, Kazakhstan, Khabarovsk, Kirgizstan, Krasnoyarsk, Magadan, Mongolia, Montana, Morocco, Nepal, Nevada, New Mexico, North European Russi, Northwest Territorie, Norway, Nunavut, Ontario, Oregon, Poland, Québec, Romania, Spain, Svalbard, Sweden, Switzerland, Tibet, Tuva, Ukraine, Utah, Washington, West Himalaya, West Siberia, Wyoming, Xinjiang, Yakutskiya, Yukon.