John Axel Nannfeldt

{{Short description|Swedish botanist and mycologist}} {{Infobox scientist |name = John Axel Nannfeldt |image = |image_size = 150px |caption = |birth_date = 18 January 1904 |birth_place = Trelleborg |death_date = {{death date and age text|4 November 1985|18 January 1904}} |death_place = Uppsala |residence = |citizenship = |ethnicity = |field = mycology, botany |work_institutions = Uppsala University |alma_mater = Uppsala University |author_abbrev_bot = Nannf. |prizes = |signature = Nannfeldt, JohnAxel-autograph.gif }}

'''John-Axel Nannfeldt''' (baptized ''Johan Axel Frithiof Nannfeldt''), born 18 January 1904 in Trelleborg and deceased 4 November 1985 in Uppsala,<ref name=FAS>{{cite journal | last= F. A. S. | year= 1986 | title= Death notices | journal = Taxon | volume=35 | issue=2 | pages = 467–468 | jstor=1221342}}</ref> was a Swedish botanist and mycologist.

Nannfeldt studied natural history at the University of Uppsala and obtained a doctorate degree in 1932.<ref>{{cite book | last= Nannfeldt | first= J. A. | year= 1932 | title= Studien über die Morphologie und Systematik der nicht-lichenisierten inoperculaten Discomyceten (Thesis, Uppsala University) | pages = 368 | publisher = Almqvist & Wiksell | series= Nova acta Regiae societatis scientiarum upsaliensis - Ser. 4. v. 8, no. 2 | url= https://openlibrary.org/b/OL19635639M/Studien_über_die_Morphologie_und_Systematik_der_nicht-lichenisierten_inoperculaten_Discomyceten }}</ref> He became professor of botany at Uppsala University in 1939, a position he held until his retirement in 1970.<ref name=FAS/> He did numerous studies on the systematics of fungi and vascular plants. Among the groups he treated were the plant pathogenic rust fungi,<ref>{{cite book | last= Hylander | first= N. |author2=I. Jørstad |author3=J. A. Nannfeldt | year= 1953 | title= Enumeratio Uredinearum Scandinavicarum | series= Opera Botanica | volume=1 | pages = 1–102 }}</ref> smut fungi<ref>{{cite journal | last= Nannfeldt | first= J. A. | year= 1977 | title= The species of ''Anthracoidea'' (Ustilaginales) on ''Carex'' subgen. ''Vignea'' with special regard to the Nordic species | journal = Botaniska Notiser | volume=130 | pages = 351–375 }}</ref> and ''Exobasidium''.<ref>{{cite journal | last= Nannfeldt | first= J. A. | year= 1981 | title= ''Exobasidium'', a taxonomic reassessment applied to the European species | journal = Symbolae Botanicae Upsalienses | volume=23 | pages = 1–72 }}</ref> He also treated taxonomy and biogeography of various groups of vascular plants, e.g. the arctic ''Poa laxa'' complex.<ref>{{cite book |last= Nannfeldt | first= J. A. | year= 1963 |chapter = Taxonomic differentiation as an indicator of the migratory history of the North Atlantic Flora with special regard to the Scandes | editor1-last = Löve |editor1-first = Á.| editor2-last= Löve |editor2-first = D.| title= North Atlantic Biota and their History: A symposium held at University of Iceland, Reykjavík July 1962 | publisher = Pergamon Press | location= Oxford | chapter-url= https://archive.org/stream/northatlanticbio00sk#page/86/mode/2up/search/nannfeldt }}</ref>

Nannfeldt published the exsiccata work ''Fungi Exsiccati Suecici, praesertim Upsalienses'' together with '''Lennart Holm''' and others.<ref>{{cite web |title=Fungi Exsiccati Suecici, praesertim Upsalienses: IndExs ExsiccataID=423122942 |website=IndExs – Index of Exsiccatae |publisher=Botanische Staatssammlung München |url=https://www.botanischestaatssammlung.de/DatabaseClients/IndExs/Exsiccatae_IndExs_Details.jsp?ExsiccataID=423122942 |access-date=19 April 2024}}</ref>

He was elected member no. 983 of the Royal Swedish Academy of Sciences in 1955.

The fungal genus ''Nannfeldtiella'' was named in his honour by Franz Petrak in 1947, (now listed as a synonym of ''Pseudombrophila aggregata'' {{small|(Eckblad) Harmaja}}.<ref>{{cite web |title=Nannfeldtiella aggregata Eckblad |url=https://www.gbif.org/species/3553516 |website=www.gbif.org |access-date=17 August 2022 |language=en}}</ref>) then in 1960, mycologist Richard P. Korf circumscribed ''Jafnea'', which is a genus of fungi in the family Pyronemataceae.<ref>{{cite journal |author=Korf R. |title=''Jafnea'', a new genus of the Pezizaceae |journal=Nagaoa |year=1960 |volume=7 |pages=3–8}}</ref><ref>{{cite book | last=Burkhardt | first=Lotte | title=Eine Enzyklopädie zu eponymischen Pflanzennamen |trans-title=Encyclopedia of eponymic plant names | publisher=Botanic Garden and Botanical Museum, Freie Universität Berlin | year=2022 | isbn=978-3-946292-41-8 | url=https://doi.org/10.3372/epolist2022|format=pdf |language=German |location=Berlin | doi=10.3372/epolist2022 |access-date=January 27, 2022}}</ref> The species of cup fungus, ''Plectania nannfeldtii'' was also named in 1968.<ref name="Eckblad 1968">{{cite journal |author=Eckblad FE. |title=The genera of the operculate discomycetes |journal=Nytt Magasin for Botanik |year=1968 |volume=15 |page=116}}</ref>

== References == {{Reflist}}

== External links == * [http://www.cybertruffle.org.uk/people/0017829_.htm Portraits, list of publications etc.]

{{DEFAULTSORT:Nannfeldt, John Axel}} Category:1904 births Category:1985 deaths Category:20th-century Swedish botanists Category:Swedish mycologists Category:Uppsala University alumni Category:Academic staff of Uppsala University Category:Members of the Royal Swedish Academy of Sciences