| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| Ot | OTTAWA[1112] | |||
| Pi | PALISADE[1112] | |||
| Pn | PAWNEE[1112] | |||
| Ps | PELISS[1112] | |||
| Pb | PEMBINA[1112] | |||
| Pnl | PENNOLL[1112] | |||
| Pq | PENQUITE[1112] | |||
| Ptd | PENTAD[1112] | |||
| Ptr | PESTERBODEN[1112] | |||
| Pt | PETERSON[1112] | |||
| Pc | PILCRAW[1112] | |||
| Plt | PILOT[1112] | |||
| Po | PIONEER[1112] | |||
| Pnc | PONCA[1112] | |||
| Pl | POOLE[1112] | |||
| Ptg | PORTAGE[1112] | |||
| Pr | POWER[1112] | |||
| Prc | POWERCLUB[1112] | |||
| Prr | PRAIRIE[1112] | |||
| Pd | PRELUDE[1112] |