Aquatic and Wetland Vascular Plants of the Northern Great Plains
Erigeron L. -- Fleabane
Biennial to perennial herbs with simple, alternate leaves. Heads radiate, hemispheric, few to many in a terminal inflorescence; involucral bracts in 1 or 2 series, linear, equal or the outer ones a little shorter, hyaline at the tip and on the margins above, green in the middle and at the base; receptacle flat to slightly convex; outer 1-few rows of florets pistillate, with narrow, white to pink ligules 0.1-0.6 mm wide; disk florets perfect, their corollas yellow; style branches flattened, the appendages short, obtuse or acute. Achenes 2- to 4-nerved; pappus of 20-30 capillary bristles.
| Lead | Characteristic | Go To |
| 1 | Leaves not clasping; rays inconspicuous. | E. lonchophyllus |
| 1 | Leaves auriculate-clasping; rays conspicuous. | E. philadelphicus |
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