| Oryctanthus grahamii (Benth.) Engl., 1935 |
| Phrygilanthus Eichler, 1868 |
| Phrygilanthus palmeri (S. Watson) Engl., 1897 |
| Phthirusa Mart., 1830 |
| Phthirusa inconspicua (Benth.) Eichler, 1868 |
| Phthirusa inorna (B.L. Rob. & Greenm.) Kuijt, 2011 |
| Phthirusa pyrifolia (Kunth) Eichler, 1868 |
| Psittacantheae Horan., 1847 |
| Psittacanthinae Engl., 1897 |
| Psittacanthus Mart., 1830 |
| Psittacanthus americanus (L.) Mart., 1830 |
| Psittacanthus auriculatus (Oliv.) Eichler, 1868 |
| Psittacanthus breedlovei Kuijt, 1996 |
| Psittacanthus calyculatus (DC.) G. Don, 1834 |
| Psittacanthus chrismarii Urb., 1897 |
| Psittacanthus karwinskyanus (Schult.) Eichler, 1868 |
| Psittacanthus kerberi (E. Fourn.) Engl., 1897 |
| Psittacanthus macrantherus Eichler, 1868 |
| Psittacanthus mayanus Standl. & Steyerm., 1944 |
| Psittacanthus palmeri (S. Watson) Barlow & Wiens, 1973 |