| Name | Havaas, Johan Jonsen |
| Date of birth | 1864 |
| Date of death | 1956 |
| Remarks | [author note: Herbarium and types: BG; additional material at DUKE, O] |
| ASA Botanist ID | 102588 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/62258eb4-e3de-4e9e-9a03-f014daf5acf1 |
| Variant name | Johan Jonsen Havaas |
| Author name | Havaas |
| B & P Author Abbrev. | Hav. |
| Standard/Label Name | J. J. Havaas |
| Full Name | Havaas, Johan Jonsen |
| Geography Author | Norway |
| Specialty Author | Fungi and Lichens |
| Citation as Author | Authors of Plant Names. Royal Botanic Gardens, Kew |
| Citation as Author | Taxonomic Literature. Second Edition. Utrecht |
| Author in | Lich. Exsicc. Norveg. |
| Author in | Lich. Norveg. Occid. Exsicc. |
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