| Author | Michaux | |
| Distribution | Mountains and upper Piedmont (primarily in the foothills and monadnocks). A specimen at NCU from Wake County proves to be H. gronovii with more than the usual number of leaves.
N.S. to Ont. and MN, south to northern GA and OK. | |
| Abundance | Infrequent to fairly common (at least locally) in the Mountains; rare to uncommon in the higher elevations of the western Piedmont. | |
| Habitat | Dry to mesic forests and woodlands, especially trailsides, wooded borders, and roadsides. | |
| Phenology | Flowering and fruiting July-October. | |
| Identification | Rough Hawkweed is most similar to Beaked Hawkweed (H. gronovii), but its inflorescence is broader than long (vs. cylindrical in outline) and has more florets per head (greater than 40 vs. 20-40). It has more stem leaves than does Beaked Hawkweed, and the basal leaves are usually absent (at flowering time). The most definitive clue is the seed shape: broadest at the tip in Rough Hawkweed, narrowed to the tip in Beaked Hawkweed. This species is less often encountered in the mountains than the other montane species -- Allegheny Hawkweed (H. paniculatum). | |
| Taxonomic Comments | None
| |
| Other Common Name(s) | Sticky Hawkweed | |
| State Rank | S3? [S3S4] | |
| Global Rank | G5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | | |
| USACE-emp | | |
