| Hymenopappus scabiosaeus L'Hér., 1788 |
| Hymenopappus scabiosaeus var. corymbosus (Torr. & A. Gray) B.L. Turner, 1956 |
| Hymenostephium Benth., 1873 |
| Hymenostephium brandegeei (S.F. Blake) E.E. Schill. & Panero, 2002 |
| Hymenostephium cordatum (Hook. & Arn.) S.F. Blake, 1915 |
| Hymenostephium gracillimum (Brandegee) E.E. Schill. & Panero, 2002 |
| Hymenostephium guatemalense (B.L. Rob. & Greenm.) S.F. Blake, 1918 |
| Hymenostephium hintonii (H. Rob.) E.E. Schill. & Panero, 2002 |
| Hymenostephium kingii (McVaugh) E.E. Schill. & Panero, 2002 |
| Hymenostephium mexicanum Benth., 1876 |
| Hymenostephium microcephalum (Less.) S.F. Blake, 1918 |
| Hymenostephium pilosulum S.F. Blake, 1915 |
| Hymenostephium rivularis (Poepp.) E.E. Schill. & Panero, 2002 |
| Hymenostephium superaxillare S.F. Blake, 1924 |
| Hymenostephium tenue (A. Gray) E.E. Schill. & Panero, 2002 |
| Hymenostephium uniseriatum E.E. Schill. & Panero, 2002 |
| Hymenostephium websteri (B.L. Turner) E.E. Schill. & Panero, 2002 |
| Hymenostephium woronowii (S.F. Blake) E.E. Schill. & Panero, 2002 |
| Hymenothrix A. Gray, 1849 |
| Hymenothrix autumnalis (W.L. Ellison) B.G. Baldwin, 2016 |