# John Walter Thomson

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Scottish-born American botanist and lichenologist (1913–2009)

John Walter Thomson Born July 9, 1913 Cockenzie, Scotland Died February 20, 2009(2009-02-20) (aged 95) Mount Horeb, Wisconsin Alma mater Columbia University University of Wisconsin Scientific career Fields Botany Institutions University of Wisconsin Thesis Relic Prairie Areas in Central Wisconsin[1] Doctoral advisor Norman C. Fassett Doctoral students William P. Jordan[2] Bill Culberson[2] Mason Hale Author abbrev. (botany) J.W.Thomson

**John Walter Thomson Jr.** (1913–2009) was a Scottish-born American [botanist](/source/Botanist) and [lichenologist](/source/Lichenologist), sometimes referred to as the "Dean of North American Lichens".[3]

## Biography

When he was eight years old, Thomson moved with his family to the U.S.A.[2] In 1935 he graduated from Columbia University with a bachelor's degree, majoring in botany and zoology. At the [University of Wisconsin–Madison](/source/University_of_Wisconsin%E2%80%93Madison) (UW Madison) he graduated in botany with a master's degree in 1937 and a Ph.D. in 1939. After receiving his Ph.D., he worked as a naturalist at Manhattan's [American Museum of Natural History](/source/American_Museum_of_Natural_History) and taught at [Brooklyn College](/source/Brooklyn_College) until 1942.[4] During WW II, he taught topics in military aviation and meteorology from 1942 to 1944 for the U.S. Army Air Corps at Superior State Teachers College (now named the [University of Wisconsin–Superior](/source/University_of_Wisconsin%E2%80%93Superior)).[5] In 1944 he became a faculty member of the department of botany at University of Wisconsin–Madison, retiring there in 1984 as professor emeritus. In retirement, he continued to work almost daily at the Madison campus until he was about 88 years old.[4]

Thomson taught for many summers at the [University of Minnesota](/source/University_of_Minnesota)'s Itasca Biological Station and Laboratories campus,[6] which is located on [Lake Itasca](/source/Lake_Itasca).[7] He collected lichens not only in the Arctic and in Wisconsin, but also in a number of other U.S. states, including "California, Florida, Indiana, Oklahoma, New York, Pennsylvania, and Washington".[2] He was the author or coauthor of over 100 scientific articles. He accumulated a herbarium of lichens, which gave the Wisconsin State Herbarium at UW Madison perhaps the world's best lichen collection of North American and Arctic material.[2][8] Thomson issued two [exsiccatae](/source/Exsiccata), namely *Lichenes Wisconsinenses exsiccati* (1946–1960) and *Lichenes Arctici* (1960–1966).[9][10]

In 1937 in [Madison, Wisconsin](/source/Madison%2C_Wisconsin), Thomson married the botanist and conservationist Olive Sherman.[11][5] Upon his death he was survived by his widow, three sons, a daughter, and seven grandchildren.[3] Another son, Douglas E. Thomson, M.D., died in 1978 at age 34.[2][12] As a memorial to Douglas their dead son, John and Olive Thomson gave money to [The Nature Conservancy](/source/The_Nature_Conservancy) for land acquisition, leading to the establishment of the Thomson Memorial Prairie,[13] which consists of 323 acres (131 ha) of remnant dry prairie.[11] Dennis Thomson and his wife Joan Schurch Thomson donated land to the nonprofit conservation organization The Prairie Enthusiasts, which created the 193-acre preserve (78 ha) named Schurch-Thomson Prairie.[14]

## Awards and honors

- 1958–1959 — President of the [American Bryological and Lichenological Society](/source/American_Bryological_and_Lichenological_Society)

- 1985 — Henry Allan Gleason Award of the [New York Botanical Garden](/source/New_York_Botanical_Garden)

- 1985 — Gulf Oil Conservation Award jointly given to John and Olive Thomson for their environmental activity

- 1992 — [Acharius Medal](/source/Acharius_Medal) of the International Association for Lichenology[15]

- 1998 — Festschrift held in honor of Thomson's 85th birthday with published volume *Lichenographia Thomsoniana* (1998)[16]

- 2010 — John Thomson Research Award established by the Botanical Club of Wisconsin[17]

## Selected publications

### Articles

- Thomson, John W. (1942). "The Lichen Genus *Cladonia* in Wisconsin". *The American Midland Naturalist*. **27** (3): 696–709. [doi](/source/Doi_(identifier)):[10.2307/2420920](https://doi.org/10.2307%2F2420920). [JSTOR](/source/JSTOR_(identifier)) [2420920](https://www.jstor.org/stable/2420920).

- Thomson, John W. (1955). "Lichens of Arctic America. II. Additions to Records of Lichen Distribution in the Canadian Eastern Arctic". *The Bryologist*. **58** (3): 246–259. [doi](/source/Doi_(identifier)):[10.1639/0007-2745(1955)58\[246:LOAAIA\]2.0.CO;2](https://doi.org/10.1639%2F0007-2745%281955%2958%5B246%3ALOAAIA%5D2.0.CO%3B2). [JSTOR](/source/JSTOR_(identifier)) [3239914](https://www.jstor.org/stable/3239914).

- Thomson, John W. (1960). "*Agrestic cyphellata*, a New Genus and Species of Lichen in the Usneaceae". *The Bryologist*. **63** (4): 246–250. [doi](/source/Doi_(identifier)):[10.1639/0007-2745(1960)63\[246:ACANGA\]2.0.CO;2](https://doi.org/10.1639%2F0007-2745%281960%2963%5B246%3AACANGA%5D2.0.CO%3B2). [JSTOR](/source/JSTOR_(identifier)) [3240565](https://www.jstor.org/stable/3240565).

- Thomson, John W. (1967). "The Lichen Genus *Baeomyces* in North America North of Mexico". *The Bryologist*. **70** (3): 285–298. [doi](/source/Doi_(identifier)):[10.1639/0007-2745(1967)70\[285:TLGBIN\]2.0.CO;2](https://doi.org/10.1639%2F0007-2745%281967%2970%5B285%3ATLGBIN%5D2.0.CO%3B2). [JSTOR](/source/JSTOR_(identifier)) [3241088](https://www.jstor.org/stable/3241088).

- Thomson, J. W.; [Iltis, H. H.](/source/Hugh_Iltis) (1968). "A Fog-Induced Lichen Community in the Coastal Desert of Southern Peru". *The Bryologist*. **71** (1): 31–34. [doi](/source/Doi_(identifier)):[10.1639/0007-2745(1968)71\[31:AFLCIT\]2.0.CO;2](https://doi.org/10.1639%2F0007-2745%281968%2971%5B31%3AAFLCIT%5D2.0.CO%3B2). [JSTOR](/source/JSTOR_(identifier)) [3240649](https://www.jstor.org/stable/3240649).

- Barrett, Paul E.; Thomson, John W. (1975). "Lichens from a High Arctic Coastal Lowland, Devon Island, N.W.T.". *The Bryologist*. **78** (2): 160–167. [doi](/source/Doi_(identifier)):[10.2307/3242046](https://doi.org/10.2307%2F3242046). [JSTOR](/source/JSTOR_(identifier)) [3242046](https://www.jstor.org/stable/3242046).

- Thomson, J. W.; Bird, C. D. (1978). "The lichen genus *Dactylina* in North America". *Canadian Journal of Botany*. **56** (14): 1602–1624. [doi](/source/Doi_(identifier)):[10.1139/b78-190](https://doi.org/10.1139%2Fb78-190).

- Moser, Thomas J.; Nash, Thomas H.; Thomson, John W. (1979). "Lichens of Anaktuvuk Pass, Alaska, with Emphasis on the Impact of Caribou Grazing". *The Bryologist*. **82** (3): 393–408. [doi](/source/Doi_(identifier)):[10.2307/3242215](https://doi.org/10.2307%2F3242215). [JSTOR](/source/JSTOR_(identifier)) [3242215](https://www.jstor.org/stable/3242215).

- Thomson, Norman F.; Thomson, John W. (1984). "Spore Ornamentation in the Lichen Genus *Solorina*". *The Bryologist*. **87** (2): 151–153. [doi](/source/Doi_(identifier)):[10.2307/3243122](https://doi.org/10.2307%2F3243122). [JSTOR](/source/JSTOR_(identifier)) [3243122](https://www.jstor.org/stable/3243122).

- Thomson, John W. (1987). "The Lichen Genera *Catapyrenium* and *Placidiopsis* in North America". *The Bryologist*. **90** (1): 27–39. [doi](/source/Doi_(identifier)):[10.2307/3243269](https://doi.org/10.2307%2F3243269). [JSTOR](/source/JSTOR_(identifier)) [3243269](https://www.jstor.org/stable/3243269).

- Thomson, John W. (1991). "The Lichen Genus *Staurothele* in North America". *The Bryologist*. **94** (4): 351–367. [doi](/source/Doi_(identifier)):[10.2307/3243824](https://doi.org/10.2307%2F3243824). [JSTOR](/source/JSTOR_(identifier)) [3243824](https://www.jstor.org/stable/3243824).

- Talbot, Stephen S.; Talbot, Sandra Looman; Thomson, John W. (1992). "Lichens of Tuxedni Wilderness Area, Alaska". *The Bryologist*. **95** (1): 20–30. [doi](/source/Doi_(identifier)):[10.2307/3243780](https://doi.org/10.2307%2F3243780). [JSTOR](/source/JSTOR_(identifier)) [3243780](https://www.jstor.org/stable/3243780).

- Thomson, J (1995). "The distribution of Arctic lichens and thoughts concerning their origin". *The Lichenologist*. **27**: 411–416. [Bibcode](/source/Bibcode_(identifier)):[1995ThLic..27R.411T](https://ui.adsabs.harvard.edu/abs/1995ThLic..27R.411T). [doi](/source/Doi_(identifier)):[10.1016/S0024-2829(05)80002-7](https://doi.org/10.1016%2FS0024-2829%2805%2980002-7). [ISSN](/source/ISSN_(identifier)) [0024-2829](https://search.worldcat.org/issn/0024-2829).

- Talbot, S. S.; Thomson, J. W.; Schofield, W. B. (2007). ["Lichens from Tetlin National Wildlife Refuge and vicinity, east-central Alaska"](https://bioone.org/journals/the-bryologist/volume-110/issue-1/0007-2745(2007)110%5b74:LFTNWR%5d2.0.CO;2/Lichens-from-Tetlin-National-Wildlife-Refuge-and-vicinity-east-central/10.1639/0007-2745(2007)110%5b74:LFTNWR%5d2.0.CO;2.short). *The Bryologist*. **110** (1): 74–91. [doi](/source/Doi_(identifier)):[10.1639/0007-2745(2007)110\[74:LFTNWR\]2.0.CO;2](https://doi.org/10.1639%2F0007-2745%282007%29110%5B74%3ALFTNWR%5D2.0.CO%3B2).

### Books and monographs

- Thomson, John Walter (1963). [*The Lichen Genus*Physcia*in North America*](https://books.google.com/books?id=k1qZpwAACAAJ). J. Cramer. [ISBN](/source/ISBN_(identifier)) [9783768254076](https://en.wikipedia.org/wiki/Special:BookSources/9783768254076). {{[cite book](https://en.wikipedia.org/wiki/Template:Cite_book)}}: ISBN / Date incompatibility ([help](https://en.wikipedia.org/wiki/Help:CS1_errors#invalid_isbn_date))

- —— (1967). [*The Lichen Genus*Cladonia*in North America*](https://books.google.com/books?id=UJUpAQAAMAAJ). University of Toronto Press. [ISBN](/source/ISBN_(identifier)) [9780802014863](https://en.wikipedia.org/wiki/Special:BookSources/9780802014863).

- —— (1979). [*Lichens of the Alaskan Arctic Slope*](https://books.google.com/books?id=qaA_AAAAYAAJ). University of Toronto Press. [ISBN](/source/ISBN_(identifier)) [9780802054289](https://en.wikipedia.org/wiki/Special:BookSources/9780802054289).

- —— (1984). [*American Arctic Lichens: The macrolichens*](https://books.google.com/books?id=LDeK1AEcRj4C). Columbia University Press. [ISBN](/source/ISBN_(identifier)) [9780231058889](https://en.wikipedia.org/wiki/Special:BookSources/9780231058889).

- —— (1984). [*American Arctic Lichens: The microlichens*](https://books.google.com/books?id=fx6KPWJ1VKsC). Univ of Wisconsin Press. [ISBN](/source/ISBN_(identifier)) [9780299134600](https://en.wikipedia.org/wiki/Special:BookSources/9780299134600).

- —— (2003). *Lichens of Wisconsin*. Madison: Wisconsin State Herbarium. [ISBN](/source/ISBN_(identifier)) [0972739300](https://en.wikipedia.org/wiki/Special:BookSources/0972739300); 386 pages{{[cite book](https://en.wikipedia.org/wiki/Template:Cite_book)}}: CS1 maint: postscript ([link](https://en.wikipedia.org/wiki/Category:CS1_maint:_postscript))

The standard [author abbreviation](/source/List_of_botanists_by_author_abbreviation_(A)) J.W.Thomson is used to indicate this person as the author when [citing](/source/Author_citation_(botany)) a [botanical name](/source/Botanical_name).[18]

## See also

- [Category:Taxa named by John Walter Thomson](https://en.wikipedia.org/wiki/Category:Taxa_named_by_John_Walter_Thomson)

## References

1. **[^](#cite_ref-Thomson1940_1-0)** Thomson, John W. (1940). "Relic Prairie Areas in Central Wisconsin". *Ecological Monographs*. **10** (4): 685–717. [Bibcode](/source/Bibcode_(identifier)):[1940EcoM...10..685T](https://ui.adsabs.harvard.edu/abs/1940EcoM...10..685T). [doi](/source/Doi_(identifier)):[10.2307/1943556](https://doi.org/10.2307%2F1943556). [ISSN](/source/ISSN_(identifier)) [0012-9615](https://search.worldcat.org/issn/0012-9615). [JSTOR](/source/JSTOR_(identifier)) [1943556](https://www.jstor.org/stable/1943556). (abridgment of Thomson's 1939 Ph.D. thesis, 123 pages)

1. ^ [***a***](#cite_ref-Ahti_2-0) [***b***](#cite_ref-Ahti_2-1) [***c***](#cite_ref-Ahti_2-2) [***d***](#cite_ref-Ahti_2-3) [***e***](#cite_ref-Ahti_2-4) [***f***](#cite_ref-Ahti_2-5) [Ahti, Teuvo](/source/Teuvo_Ahti) (2009). ["A tribute to John Walter Thomson (1913–2009)"](https://doi.org/10.1017%2FS0024282909990508). *The Lichenologist*. **41** (6): 561–563. [doi](/source/Doi_(identifier)):[10.1017/S0024282909990508](https://doi.org/10.1017%2FS0024282909990508). [ISSN](/source/ISSN_(identifier)) [0024-2829](https://search.worldcat.org/issn/0024-2829).

1. ^ [***a***](#cite_ref-BEN_3-0) [***b***](#cite_ref-BEN_3-1) Bennett, John (March 10, 2009). ["Lichenologist John Walter Thomson (1913–2009)"](https://www.ou.edu/cas/botany-micro/ben/ben405.html). *Botanical Electronic News* (405).

1. ^ [***a***](#cite_ref-obitBCW_4-0) [***b***](#cite_ref-obitBCW_4-1) Cochrane, Theodore S. (April 2009). ["In Memoriam: John Walter Thomson 1913 – 2009"](https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxib3RhbmljYWxjbHVib2Z3aXNjb25zaW58Z3g6NWM4MWYwOWFhODBlYjhlMw). *Wisconsin Flora (Newsletter of the Botanical Club of Wisconsin)*: 1–3. reprinted in: Cochrane, Theodore S. (April 2009). ["In Memoriam: John W. Thomson"](https://quod.lib.umich.edu/m/mbot/0497763.0048.206/--in-memoriam-john-w-thomson?rgn=main;view=fulltext). *The Great Lakes Botanist: A Journal of North American Botany*. **48** (2): 61–62.

1. ^ [***a***](#cite_ref-Gilchrist_5-0) [***b***](#cite_ref-Gilchrist_5-1) Gilchrist, Susan Cantrell (2013). "Interview: John Walter Thomson and Olive (Sherman) Thomson". [*Views of the Ridge: Oral Perspectives from the Military Ridge Prairie Heritage Area in Southwest Wisconsin*](https://dnr.wi.gov/files/PDF/pubs/ss/SS1123.pdf) (PDF). Wisconsin Department of Natural Resources. pp. 197–203.

1. **[^](#cite_ref-6)** Henderson, Rich (Spring 2009). ["Remembering a Conservation Leader and Educator"](https://d3n8a8pro7vhmx.cloudfront.net/theprairieenthusiasts/pages/63/attachments/original/1558143814/PPspring2009.pdf?1558143814) (PDF). *The Prairie Promoter*. **22** (1). The Prairie Enthusiasts: 3–4.

1. **[^](#cite_ref-7)** Itasca Biological Station and Laboratories, College of Biological Sciences (February 20, 2015). ["About Itasca"](http://www.cbs.umn.edu/itasca/about/). University of Minnesota.

1. **[^](#cite_ref-8)** ["Lichens"](https://herbarium.wisc.edu/collections/lichens/). *Wisconsin State Herbarium*.

1. **[^](#cite_ref-9)** ["Lichenes Wisconsinenses exsiccati: IndExs ExsiccataID=165012480"](https://www.botanischestaatssammlung.de/DatabaseClients/IndExs/Exsiccatae_IndExs_Details.jsp?ExsiccataID=165012480). *IndExs – Index of Exsiccatae*. Botanische Staatssammlung München. Retrieved September 21, 2024.

1. **[^](#cite_ref-10)** ["Lichenes Arctici: IndExs ExsiccataID=515968978"](https://www.botanischestaatssammlung.de/DatabaseClients/IndExs/Exsiccatae_IndExs_Details.jsp?ExsiccataID=515968978). *IndExs – Index of Exsiccatae*. Botanische Staatssammlung München. Retrieved September 21, 2024.

1. ^ [***a***](#cite_ref-wchf_11-0) [***b***](#cite_ref-wchf_11-1) ["Olive Thomson WCGF Nominee Passes"](https://wchf.org/olive-thomson-wchf-nominee-passes/). *The Wisconsin Conservation Hall of Fame*. September 24, 2017.

1. **[^](#cite_ref-Enerson1980_12-0)** Enerson, D. E. (1980). "In memoriam. Douglas E. Thomson, M.D.". *Radiology*. **135** (3): 798. [doi](/source/Doi_(identifier)):[10.1148/radiology.135.3.6992202](https://doi.org/10.1148%2Fradiology.135.3.6992202). [ISSN](/source/ISSN_(identifier)) [0033-8419](https://search.worldcat.org/issn/0033-8419). [PMID](/source/PMID_(identifier)) [6992202](https://pubmed.ncbi.nlm.nih.gov/6992202).

1. **[^](#cite_ref-13)** ["Thomson Memorial Prairie"](https://www.nature.org/en-us/get-involved/how-to-help/places-we-protect/thomson-memorial-prairie/). *The Nature Conservancy*.

1. **[^](#cite_ref-14)** ["Schurch-Thomson Prairie"](https://www.theprairieenthusiasts.org/schurch_thomson). *The Prairie Enthusiasts*.

1. **[^](#cite_ref-15)** ["Acharius Medallists"](https://web.archive.org/web/20210624065615/http://www.lichenology.org/index.html?%2FAwards%2FAchariusMedallists.html). *International Association for Lichenology*. Archived from [the original](http://www.lichenology.org/index.html?/Awards/AchariusMedallists.html) on June 24, 2021. Retrieved February 3, 2021.

1. **[^](#cite_ref-Hawksworth2007_16-0)** [Hawksworth, D. L.](/source/David_L._Hawksworth) (July 1999). "Review of *Lichenographia Thomsoniana: North American Lichenology in Honour of John W. Thomson*, edited by M. G. Glenn, R. C. Harris, R. Ding and M. S. Cole". *The Lichenologist*. **31** (4): 403. [doi](/source/Doi_(identifier)):[10.1006/lich.1999.0214](https://doi.org/10.1006%2Flich.1999.0214). [ISSN](/source/ISSN_(identifier)) [0024-2829](https://search.worldcat.org/issn/0024-2829).

1. **[^](#cite_ref-17)** ["John Thomson Award"](https://sites.google.com/site/botanicalclubofwisconsin/home/john-thomson-research-award). *Botanical Club of Wisconsin*.

1. **[^](#cite_ref-18)** [International Plant Names Index](/source/International_Plant_Names_Index). [*J.W.Thomson*](https://www.ipni.org/search?q=author%20std%3AJ.W.Thomson).

## External links

- Data related to [John Walter Thomson](https://species.wikimedia.org/wiki/John_Walter_Thomson) at Wikispecies

- [Citation for 1992 Acharius Medal](http://www.lichenology.org/Awards/Acharius_Thomson.html) [Archived](https://web.archive.org/web/20070311001413/http://www.lichenology.org/Awards/Acharius_Thomson.html) 2007-03-11 at the [Wayback Machine](/source/Wayback_Machine) by [Irwin Murray Brodo](/source/Irwin_M._Brodo)

v t e Presidents of the American Bryological and Lichenological Society 1899–1949 Abel Joel Grout (1899–1900) George Newton Best (1901–1902) John Michael Holzinger (1903–1904) Edward Blanchard Chamberlain (1905–1907) Theodore Christian Frye (1908–1909) Bruce Fink (1910) Alexander William Evans (1911–1915) Elizabeth Gertrude Britton (1916–1919) Annie Morrill Smith (1920–1921) Albert LeRoy Andrews (1922–1923) Robert Statham Williams (1924–1930) Edwin Bunting Bartram (1931–1932) Aaron John Sharp (1933–1935) William Campbell Steere (1936–1937) George Elwood Nichols (1938–1939) Hugo Leander Blomquist (1940–1941) Henry Shoemaker Conard (1942–1945) Richard T. Wareham (1946–1947) Paul Morrison Patterson (1948–1949) 1950–1999 Lewis Edward Anderson (1950–1951) Geneva Sayre (1952–1953) Winona H. Welch (1954–1955) Ruth Schornherst Breen (1956–1957) John Walter Thomson (1958–1959) Roy Franklin Cain (1960–1961) Betty Wilson Higinbotham (1962) Howard Alvin Crum (1962–1963) Harvey A. Miller (1964–1965) Seville Flowers (1965–1967) Wilfred B. Schofield (1967–1969) William Alfred Weber (1969–1970) Paul Leslie Redfearn (1971–1973) Emanuel David Rudolph (1974–1975) Ronald A. Pursell (1975–1977) Irwin M. Brodo (1977–1979) William D. Reese (1979–1981) Thomas Hawkes Nash III (1981–1983) Norton G. Miller (1985–1987) William Louis Culberson (1987–1989) Dale H. Vitt (1989–1991) Vernon Ahmadjian (1992–1993) Barbara J. Crandall-Stotler (1993–1995) Chicita Frances Culberson (1995–1997) Brent D. Mishler (1997–1999) 2000–present Robert S. Egan (1999–2001) William Russel Buck (2001–2003) James Donald Lawrey (2003–2005) Nancy G. Slack (2005–2007) Theodore Lee Esslinger (2007–2009) Karen S. Renzaglia (2009–2011) Roger Rosentreter (2011–2013) A. Jonathan Shaw (2013–2015) Larry L. St. Clair (2015–2017) Catherine La Farge (2017–2019) Doug Ladd (2019–2021) Scott Schuette (2021–2023) Daphne Stone (2023–2025)

v t e Recipients of the Acharius Medal Kansri Boonpragob (2024) Per Magnus Jørgensen (2021) James D. Lawrey (2021) William Alfred Weber (2018) Allan Green (2016) Josef Hafellner (2016) Bruce McCune (2016) Peter Crittenden (2014) Pier Luigi Nimis (2014) Ana Crespo (2012) Leif Tibell (2012) Brian John Coppins (2010) Thomas Hawkes Nash III (2010) David Galloway (2008) Hannes Hertel (2008) Rosmarie Honegger (2008) Mark Seaward (2006) Jack Elix (2004) Ludger Kappen (2004) Marie-Agnès Letrouit-Galinou (2004) David Cecil Smith (2003) David Leslie Hawksworth (2002) Teuvo Ahti (2000) Georges Clauzade (2000) Nina Golubkova (2000) Vernon Ahmadjian (1996) Siegfried Huneck (1996) Christian Leuckert (1996) Ernie Brodo (1994) Margalith Galun (1994) Syo Kurokawa (1994) Elisabeth Tschermak-Woess (1994) Dharani Awasthi (1992) Chicita F. Culberson (1992) William Louis Culberson (1992) Gunnar Degelius (1992) Aino Henssen (1992) Peter James (1992) Hildur Krog (1992) Otto Ludwig Lange (1992) Josef Poelt (1992) Rolf Santesson (1992) John Walter Thomson (1992) Hans Trass (1992) Antonín Vězda (1992)

Authority control databases International ISNI VIAF GND FAST WorldCat National United States Netherlands Norway Israel Academics CiNii International Plant Names Index People Deutsche Biographie DDB Other IdRef

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Adapted from the Wikipedia article [John Walter Thomson](https://en.wikipedia.org/wiki/John_Walter_Thomson) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/John_Walter_Thomson?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.