About Erigeron peregrinus (Pursh) Greene
Erigeron peregrinus (Pursh) Greene, commonly called wandering fleabane, is a North American flowering plant species in the family Asteraceae. It is native to northwestern North America, ranging from Alaska to Oregon. Populations once classified as this species from locations further south, such as California and Colorado, have since been moved to other taxa or recognized as separate distinct species. This plant is a perennial herb that grows up to 70 centimeters (28 inches) tall, and spreads via underground rhizomes. Its leaves, which range from hairless to hairy, reach up to 10 centimeters long at the base of the branching stem, and grow smaller as they occur higher on the stem. The plant usually produces just one flower head per stem; each head holds 30 to 80 blue, purple, pink, or white ray florets that surround numerous disc florets. Its flowering season runs from July to August, and it grows in habitats including stream banks, bogs, and moist mountain meadows. Two varieties are recognized: Erigeron peregrinus var. peregrinus, found in Alaska, Yukon, British Columbia, and Alberta, and Erigeron peregrinus var. thompsonii (S.F.Blake ex J.W. Thompson) Cronquist, found in Washington.
