| Heterotheca mucronata V.L. Harms ex B.L. Turner, 1984 |
| Heterotheca rosei (B. Wagenkn.) G.L. Nesom, 2019 |
| Heterotheca rutteri (Rothr.) Shinners, 1951 |
| Heterotheca sessiliflora (Nutt.) Shinners, 1951 |
| Heterotheca sessiliflora var. sessiliflora (Nutt.) Shinners, 1951 |
| Heterotheca sessiliflora var. thiniicola (Rzed. & E. Ezcurra) G.L. Nesom, 1997 |
| Heterotheca subaxillaris (Lam.) Britton & Rusby, 1887 |
| Heterotheca subaxillaris subsp. latifolia (Buckley) Semple, 2004 |
| Heterotheca subaxillaris subsp. subaxillaris (Lam.) Britton & Rusby, 1887 |
| Heterotheca thiniicola (Rzed. & E. Ezcurra) B.L. Turner, 1987 |
| Heterotheca villosa (Pursh) Shinners, 1951 |
| Heterotheca viridis (G.L. Nesom) G.L. Nesom, 2019 |
| Heterotheca viscida (A. Gray) V.L. Harms, 1968 |
| Heterotrichum M. Bieb., 1819 |
| Heterotrichum octonum (Bonpl.) DC., 1828 |
| Hidalgoa La Llave & Lex., 1824 |
| Hidalgoa breedlovei Sherff, 1966 |
| Hidalgoa lessingii DC., 1836 |
| Hidalgoa pentamera Sherff, 1947 |
| Hidalgoa steyermarkii Sherff, 1947 |