Aquatic and Wetland Vascular Plants of the Northern Great Plains
49. Asteraceae, the Aster Family
8. Erigeron L. -- Fleabane2. Erigeron philadelphicus L. -- Philadelphia fleabane
Fibrous-rooted biennial or shortlived perennial 2-7 dm tall; stems 1-few, hirsute. Leaves oblanceolate to spatulate below, oblong to lanceolate, auriculate-clasping and reduced upward, 2-15(27) cm long, 0.5-4(5) cm wide, pubescent to nearly glabrous, obtuse to rounded, entire to crenate or sinuate. Heads few to many in a narrow to widely branched inflorescence, 1.5-2.5 cm across; involucres 3-6 mm high, the bracts hirsute, equal or nearly so; rays numerous, conspicuous, white to deep pink, 5-10 mm long, 0.2-0.6 mm wide; disk corollas exceeding the pappus bristles. Jun--Jul, occasionally flowering in Aug--Sep. Wet meadows, shores, stream banks, wet woods, floodplains, springs and boggy places; common in the n and e parts, rather scattered s and w; (Newf. to B.C., s to FL and CA).
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