Arnica parryi
 Arnica parryi is a species of arnica known by the common name Parry's arnica. It is native to western North America from Yukon to California to Colorado where it is a resident of temperate coniferous forests. This is a rhizomatous perennial herb producing a single unbranched stem to heights between 10 and 60 centimeters. There are oval-shaped leaves around the base of the stem and a few pairs of longer narrower petioled leaves above them.