Hieracium is a genus of perennial herbs with milky sap (latex), usually hairy to some extent, roots fibrous, from a rhizome or crown.
Leaves mostly in a basal rosette, sometimes a few alternate leaves on flowering stem.
Flowers mostly yellow, all rays (like dandelions), heads with basal bracts overlapping.
Fruit dry, 1-seeded achene, deeply ribbed, with a plume of usually brownish bristles. Presumably wind dispersed.
Wetland status: ours all UPL.
Origin: Ours mostly non-natives.
Habitat: Ours mostly weeds of open areas, lawns, roadsides, fields. Native species sometimes woodland plants.