Erigeron glacialis
Erigeron glacialis, the glacial daisy, glacial fleabane, Subalpine fleabane, or wandering fleabane, is a western North American perennial plant in the (daisy family). "Erigeron glacialis" is native to the mountains of western North America, including Cascades, the Sierra Nevada, and the Rocky Mountains. It has been found from Alaska and Yukon south as far as California, Arizona, and New Mexico. In the Sierra Nevada, it may be found with mixed coniferous and upper montane vegetation types, and in the alpine zone to . "Erigeron glacialis" is a perennial herb up to 70 cm (28 inches) tall, with a thick  taproot and spreading by means of underground rhizomes. Leaves are up to 20 cm (8 inches) long, linear-oblanceolate to broadly lanceolate or spatulate. Each stem sometimes produces only 1 flower head, sometimes a group of up to 8. Each head has up to 80 white, blue, pink, or lavender ray florets surrounding numerous yellow disc florets. It blooms between July and September.