[Wikipedia] Range, Habitat: Arnica parryi is a North American species of flowering plant known by the common names Parry's arnica or nodding arnica.[3] It is native to western Canada (Yukon, British Columbia, Alberta) and the western United States as far south as Inyo County, California and McKinley County, New Mexico. It grows in temperate coniferous forests and alpine meadows in mountainous areas, primarily the Rocky Mountains, Cascades, and Sierra Nevada. (link added by Mary Ann Machi)