| Common Name | Scientific Name | Code |
| n/a | Fossombronia alaskana Steere & Inoue | FOAL2 |
| n/a | Fossombronia brasiliensis Steph. | FOBR |
| n/a | Fossombronia cristula Austin | FOCR2 |
| n/a | Fossombronia foveolata Lindb. | FOFO2 |
| n/a | Fossombronia hispidissima Steph. | FOHI2 |
| n/a | Fossombronia lamellata Steph. | FOLA2 |
| n/a | Fossombronia longiseta (Austin) Austin | FOLO2 |
| n/a | Fossombronia macounii Austin | FOMA4 |
| n/a | Fossombronia Raddi | FOSSO |
| n/a | Fossombronia texana Lindb. | FOTE5 |
| n/a | Fossombronia wondraczekii (Corda) Dumort. | FOWO |
| n/a | Fossombronia zygospora R. M. Schust. | FOZY |
| n/a | Petalophyllum Nees & Gottsche ex Lehm. | PETAL3 |
| n/a | Petalophyllum ralfsii (Wilson) Nees & Gottsche ex Lehm. | PERA11 |