| Name | St. John, Robert Porter |
| Date of birth | 1869 |
| Date of death | 1960 |
| ASA Botanist ID | 182779 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/a22cef9c-21fe-47c4-af98-0676b9c6a542 |
| Variant name | Robert Porter St. John |
| Author name | R. P. St. John |
| B & P Author Abbrev. | R. P. St. John |
| Standard/Label Name | R. P. St. John |
| Full Name | St. John, Robert Porter |
| Specialty Author | Pteridophytes |
| Specialty Author | Spermatophytes |
| Citation as Author | Authors of Plant Names. Royal Botanic Gardens, Kew |
| Member of teams/groups | |
| Collector Teams: | E. P. St. John, R. P. St. John & J. K. Small |