| Oocarpon Micheli, 1874 |
| Oocarpon torulosum (Arn.) Urb., 1931 |
| Pachylophus (Spach) Walp., 1843 |
| Pelozia Rose, 1909 |
| Pelozia (Rose) Plitmann, P.H. Raven & Breedlove, 1973 |
| Pelozia clavata (Brandegee) Rose, 1909 |
| Pseudolopezia Rose, 1909 |
| Pseudolopezia longiflora (Decne.) Rose, 1909 |
| Pterocaulon Ramamoorthy, 1980 |
| Quelusia (Vand.) DC., 1828 |
| Raimannia Rose ex Britton & A. Br., 1913 |
| Raimannia (Rose ex Britton & A. Brown) W. Dietr., 1978 |
| Raimannia laciniata (Hill) Rose, 1905 |
| Riesenbachia C. Presl, 1831 |
| Riesenbachia (C. Presl) Plitmann, P.H. Raven & Breedlove, 1973 |
| Riesenbachia racemosa C. Presl, 1831 |
| Schufia (Spach) Munz, 1943 |
| Semeiandra Hook. & Arn., 1838 |
| Semeiandra grandiflora Hook. & Arn., 1838 |
| Seminuda P.H. Raven, 1963 |