Pluchea odorata is an annual herb, to 60m (usually less than 40 cm); hairy, aromatic when crushed.
Leaves alternate, elliptic, 4-15 cm long, 1-7 cm wide, tip pointed, margin toothed.
Flowers pink-purple, tiny, no ray flowers, in numerous small, narrow heads about 0.7 cm long, basal bracts (involucre), hairy, overlapping in several rows; inflorescence of flat-topped clusters of flower heads; blooming Aug.-Sept.
Wetland status: FACW.
Frequency in NYC: Infrequent.
Habitat: Salt marshes, tidal creeks, open, wet brackish areas, also in the seed bank of some dredge-spoil fill.