Claimed natural history specimens collected or identified by Riccardo Ricci
| Scientific Name | Country | Institution | Date |
| Festuca circummediterranea | Italy | K | 1879-06-08 00:00:00.0000000 |
| Catapodium balearicum (Willk.) H.Scholz | BIO-UNIPI | 1880-06 | |
| Anthoxanthum odoratum L. | Italy | W | 1879-07 |
| Agrostis stolonifera L. | Italy | W | 1879 |
| Agrostis tenuis Sibth. | Italy | W | 1879-06 |
| Agrostis castellana Boiss. & Reut. | Italy | W | 1879-06 |
| Agrostis castellana Boiss. & Reut. | Italy | W | 1880-07 |
| Festuca valesiaca Schleich. ex Gaudin | Italy | W | 1878-06 |
| Poa bulbosa L. | Italy | W | 1880-05 |
| Festuca circummediterranea Patzke | Italy | W | 1877-07-18 |