Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus | 
| Pteridospermae  | |
|---|---|
| BT | Plantae | 
| .Spermatophyta | |
| ..Gymnospermae | |
| ...Pteridospermae | |
| NT | Callipteris | 
| Neuropteris | |
| RT | Sphenopteris | 
| Ptilophyllum | |
| Taeniopteris | |
| Dicroidium | |
| Pecopteris | |
| Data sets | Publications | Expeditions | Thesaurus | 
| Pteridospermae  | |
|---|---|
| BT | Plantae | 
| .Spermatophyta | |
| ..Gymnospermae | |
| ...Pteridospermae | |
| NT | Callipteris | 
| Neuropteris | |
| RT | Sphenopteris | 
| Ptilophyllum | |
| Taeniopteris | |
| Dicroidium | |
| Pecopteris | |