Name(s) in cluster
| Ptychatractus | urn:lsid:organismnames.com:name:2981063 |
| Ptychatractus (Stimps. ) | urn:lsid:organismnames.com:name:4082602 |
| Ptychatractus (Stamps. ) | urn:lsid:organismnames.com:name:4154661 |
| Ptychatractus Stimpson 1865 | urn:lsid:organismnames.com:name:4263120 |
...