| Cathartolinum cruciata (Planch.) Small | Linum cruciatum Planch. |
| Cathartolinum elongatum Small | Linum elongatum (Small) H.J.P. Winkl. |
| Cathartolinum hypericifolium (Salisb.) Small | Linum hypericifolium Salisb. |
| Cathartolinum kingii (S.Watson) Small | Linum kingii S.Watson |
| Cathartolinum rupestre (Engelm. ex A.Gray) Small | Linum rupestre Engelm. ex A.Gray |
| Cathartolinum salsoloides (Lam.) Rchb. | Linum salsoloides Lam. |
| Cathartolinum sedoides (J.M.Porter) Small | Linum kingii S.Watson |
| Cathartolinum subteres (Trel.) Small | Linum subteres (Trel.) H.J.P.Winkl. |
| Cathartolinum suffruticosum (L.) Rchb. | Linum suffruticosum L. |
| Cathartolinum tenuifolium (L.) Rchb. | Linum tenuifolium L. |
| Cathartolinum wrightii Small | Linum rupestre Engelm. ex A.Gray |