Hieracium pilosella is a perennial herb, sap milky, rhizomatous, mat-forming colonial from thread-like, leafy stolons, stem 3-25 cm tall, sticky, blackish-hairy, also with long hairs.
Leaves of basal rosette 2-13 cm long, 0.6-2 cm wide, widest above middle (oblanceolate), green, with long hairs above, tan or white wooly below, especially when young, flowering stem leafless or 1 small leaf.
Flowers yellow, all rays, heads usually single, bracteate base 0.7-1 cm tall, black-hairy; blooms and fruits May-Sept.
Fruit dry, 1-seeded achenes, about 0.2 cm long, plumed.
Wetland status: UPL.
Frequency in NYC: Very infrequent
Habitat: Weed of open areas, lawns, roadsides.