Pseudognaphalium obtusifolium is an annual, winter annual, or biennial herb, 0.3-1 m tall, stem erect, densely white-wooly; fragrant when bruised.
Leaves alternate, stalkless (sessile) but not clasping, blade lance-linear to 10 cm long, 1 cm wide, white wooly below, dull dark green above, winter rosette leaves spatula-shaped, hairy. Dry leaves persistent on stem into winter, dark brown above, white below.
Flowers yellow, soon turning brown, narrowly tubular, very small, numerous, no rays, only tips showing at top of head amid whitish, papery, overlapping bracts of floral base (involucre), heads bud-like 0.5-0.7 cm long, bracts opening outward in seed; inforescence branched, flower heads in dense clusters at ends of branches.
Fruit dry 1-seeded achenes with white bristle, wind dispersed.
Wetland status: UPL.
Frequency in NYC: Infrequent.
Habitat: Open areas, on dry fill, sand. Probably not a good competitor in dense vegetation.