Erigeron strigosus is an annual, occasionally biennial herb, 30-70 cm tall, somewhat hairy, roots fibrous, occasionally colonial from rhizomes.
Leaves sparse, basal leaves widest above middle, 3–15 cm long 5–2 cm wide, margin entire or toothed, stem leaves narrower, toothless (otherwise very similar to E. annuus).
Flowers in radiate heads, ray flowers white (sometimes pinkish) 50-100, 0.4-0.6 cm long, to 0.1 cm wide, sometimes very short, disk 0.5-1.2 cm wide, flowers yellow, ca 0.2 cm long; self-fertile (agamospermy), (Mulligan and Kevan 1973).
Fruit dry, 1-seeded, ca 0.1 cm long, with grayish plume; wind dispersed.
Wetland status: FACU+.
Frequency in NYC: Infrequent.
Habitat: Open disturbed areas, roadsides, soil pH 4.8-7.2 (USDA, NRCS 1993+).
Notes: Much like E. annuus but much less common, at least in NYC.