| Name | Theorin, Pehr Gustaf Emanuel |
| Date of birth | 1842 |
| Date of death | 1916 |
| Remarks | [author note: Herbarium and types unknown; material at E, L, LD, S, UPS] [collector note: GB (Lich., col. 1864-87), S, UPS.] |
| ASA Botanist ID | 133051 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/89ce889b-445d-4aeb-bb4f-8bfb738dec5b |
| Variant name | Pehr Gustaf Emanuel Theorin |
| Author name | Theorin |
| B & P Author Abbrev. | Theorin |
| Standard/Label Name | P. G. E. Theorin |
| Full Name | Theorin, Pehr Gustaf Emanuel |
| Geography Author | Sweden |
| Geography Collector | Sweden |
| Specialty Author | Spermatophytes |
| Specialty Collector | Lichens |
| Citation as Author | Authors of Plant Names. Royal Botanic Gardens, Kew |
| Citation as Author | Taxonomic Literature. Second Edition. Utrecht |
| Citation as Collector | Index Herbariorum - Collectors T-Z |