Hieracium paniculatum is a perennial herb, 0.3-1.5 m tall, sap milky, stems usually solitary, , from a short root crown, 30-150 cm tall, lower stem long-hairy, upper smooth, leafy to inflorescence.
Leaves alternate, no rosette, lower leaves stalked, blade 4-12 cm long, 1-2 cm wide, thin, usually hairless, white-waxy below, margin few-toothed, soon deciduous, upper leaves narrowly elliptic, almost stalkless.
Flowers yellow, all rays, 8-30 per head, bracteate base 0.5-0.9 cm tall, narrow at based; inflorescence branched, open, flower heads on long, thin stalks; blooms and fruits July-Sept.
Fruit dry, 1-seeded achenes, about 0.2 cm long, plume of tannish bristles.
Wetland status: UPL.
Frequency in NYC: Very infrequent.
Habitat: Open woods.