Hieracium x floribundum is a perennial herb, sap milky, colonial from rhizomes and leafy stolons, stem 20-80 cm tall, sparsely long-hairy.
Leaves mostly in a basal rosette, 3-14 cm long, including stalk, 0.6-2 cm wide, surface waxy-pale, mostly hairless above, usually long-hairy below; flowering stem with 0-2 small leaves.
Flowers yellow, all rays, bracteate base (involucre) 0.5-0.9 cm, wooly and blackish-hairy; inflorescence of densely, branched with 3-50 flower heads; blooms June-Aug.
Fruit dry, 1-seeded achenes, plumed, wind dispersed.
Wetland status: UPL.
Frequency in NYC: Infrequent.
Habitat: Open areas, fill, roadsides, fields.