| Name | Almquist, Sigfrid Oscar Immanuel |
| Date of birth | 1844 |
| Date of death | 1923 |
| Remarks | [author note: Herbarium and types: S; duplicates at C, GB, LD, UPS, Z] |
| ASA Botanist ID | 100373 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/ba9c4e4b-08e1-4b69-b173-8e6d822a3247 |
| Variant name | Sigfrid Oscar Immanuel Almquist |
| Author name | Almquist |
| B & P Author Abbrev. | Almq. |
| Standard/Label Name | S. O. I. Almquist |
| Full Name | Almquist, Sigfrid Oscar Immanuel |
| Geography Author | Sweden |
| Specialty Author | Fungi and Lichens |
| Specialty Author | Spermatophytes |
| Citation as Author | Authors of Plant Names. Royal Botanic Gardens, Kew |
| Citation as Author | Taxonomic Literature. Second Edition. Utrecht |
| Author in | Monogr. Arthon. Scand. |