| Common Name | Scientific Name | Code |
| Brown's peony | Paeonia brownii Dougl. ex Hook. | PABR |
| California peony | Paeonia californica Nutt. | PACA2 |
| Chinese peony | Paeonia lactiflora Pallas | PALA27 |
| common peony | Paeonia officinalis L. | PAOF2 |
| dian mu dan | Paeonia delavayi Franch. | PADE23 |
| moutan peony | Paeonia suffruticosa Andrews | PASU39 |
| Paeonia californica | Paeonia brownii Dougl. ex Hook. ssp. californica (Nutt.) Abrams | PABRC |
| Paeonia corallina | Paeonia cambessedesii Willk. | PACA37 |
| Paeonia delavayi | Paeonia lutea Delavay ex Franch | PALU8 |
| peony | Paeonia corallina Retz. | PACO55 |
| peony | Paeonia L. | PAEON |