| Acourtia queretarana B.L. Turner, 1993 |
| Acourtia reticulata (Lag. ex D. Don) Reveal & R.M. King, 1973 |
| Acourtia reticulata var. maculata B.L. Turner, 1993 |
| Acourtia reticulata var. reticulata (Lag. ex D. Don) Reveal & R.M. King, 1973 |
| Acourtia rigida DC., 1838 |
| Acourtia rigida var. acuminata (Bacig.) Reveal & R.M. King, 1973 |
| Acourtia rigida var. linearifolia (Bacig.) Reveal & R.M. King, 1973 |
| Acourtia runcinata (Lag. ex D. Don) B.L. Turner, 1978 |
| Acourtia rzedowskii B.L. Turner, 1993 |
| Acourtia scapiformis (Bacig.) B.L. Turner, 1978 |
| Acourtia scaposa (S.F. Blake) B.L. Turner, 1978 |
| Acourtia seemannii (A. Gray) Sch. Bip., 1854 |
| Acourtia simulata (S.F. Blake) R.M. King & Reveal, 1973 |
| Acourtia sinaloana B.L. Turner, 1993 |
| Acourtia souleana B.L. Turner, 1993 |
| Acourtia tenoriensis B.L. Turner, 1985 |
| Acourtia thurberi (A. Gray) Reveal & R.M. King, 1973 |
| Acourtia thyrsoidea (A. Gray) Reveal & R.M. King, 1973 |
| Acourtia tomentosa (Brandegee) Reveal & R.M. King, 1973 |
| Acourtia turbinata (La Llave & Lex.) DC., 1838 |