Kingdom Plantae Family Asteraceae Genus Erigeron | Order Asterales Tribe Astereae Rank Species | |
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Erigeron filifolius is a North American species of flowering plants in the daisy family known by the common names thread-leaf fleabane.
Erigeron filifolius is widespread across much of western North America. It has been found in western Canada (British Columbia) and the western United States (primarily the Cascades of Washington, Oregon, and northern California with additional populations in northern Nevada, Idaho, northwestern Montana, and northern Utah).
Erigeron filifolius is a branched perennial herb up to 50 centimeters (20 inches) in height. Leaves are long and thin, often thread-like, up to 8 cm (3.2 inches) long. Each stem sometimes produces only 1 flower head per stem, sometimes flat-topped clusters of 10 or more. Each head may contain as many as 125 white, blue, pink, or lavender ray florets surrounding numerous yellow disc florets.