Pilosella flagellaris

Pilosella flagellaris (synonym Hieracium flagellare ) is a European plant species in the tribe Cichorieae within the family Asteraceae. It is native to Europe but naturalized in scattered locations in the United States and Canada.

Pilosella flagellaris is a small herb up to 20 cm tall, with leaves mostly in a rosette at the bottom. Leaves are up to 130 mm long, with no teeth on the edges. One stalk will produce 2-4 flower heads in a flat-topped array. Each head has 90–120 yellow ray flowers but no disc flowers.