| Petasites japonicus (Siebold & Zucc.) Maxim., 1866 |
| Peteravenia R.M. King & H. Rob., 1971 |
| Peteravenia malvifolia (DC.) R.M. King & H. Rob., 1971 |
| Peteravenia phoenicolepis (B.L. Rob.) R.M. King & H. Rob., 1971 |
| Peteravenia rhodochlamydea (A. Gray) R.M. King & H. Rob., 1971 |
| Peteravenia schultzii (Schnittsp.) R.M. King & H. Rob., 1971 |
| Peucephyllum A. Gray, 1859 |
| Peucephyllum schottii A. Gray, 1859 |
| Phaethusa Gaertn., 1791 |
| Phanerostylis (A. Gray) R.M. King & H. Rob., 1972 |
| Phanerostylis coahuilensis (A. Gray) R.M. King & H. Rob., 1972 |
| Phanerostylis glutinosa (Brandegee) R.M. King & H. Rob., 1972 |
| Phanerostylis hintoniorum (B.L. Turner) R.M. King & H. Rob., 1986 |
| Phanerostylis nesomii (B.L. Turner) R.M. King & H. Rob., 1981 |
| Phanerostylis pedunculosa (DC.) R.M. King & H. Rob., 1972 |
| Phania DC., 1836 |
| Phania arbutifolia (Kunth) DC., 1836 |
| Phania dissecta Hook. & Arn., 1841 |
| Phania trinervia Moc. ex DC., 1836 |
| Phania urenifolia Hook. & Arn., 1838 |