# Leo Roy Tehon

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American mycologist (1895-1953)

**Leo Roy Tehon** (21 June 1895 – 5 May 1953) was an American [mycologist](/source/Mycologist) and [plant pathologist](/source/Plant_pathologist). He worked in the [Illinois Natural History Survey](/source/Illinois_Natural_History_Survey) from 1921 until his death.

## Life and work

Tehon was born in [Dumont, South Dakota](/source/Delmont%2C_South_Dakota), the son of Irish immigrant Patrick John and Nebraska-born Bertha May Whittier, a relative of the poet [John Greenleaf Whittier](/source/John_Greenleaf_Whittier). The family was poor and after the early death of his father Leo worked in the railways to pay for his schooling. He went to school in [Sturgis, South Dakota](/source/Sturgis%2C_South_Dakota), [Deadwood](/source/Deadwood%2C_South_Dakota) and [Fremont, Nebraska](/source/Fremont%2C_Nebraska). He went to Fremont Normal School and Gregg School, Chicago before going to the [University of Wyoming](/source/University_of_Wyoming) to receive a BA in 1916. The classes of Aven Nelson attracted him to botany. He studied botany at the [University of Illinois](/source/University_of_Illinois). In 1917 he taught botany at [Arsenal Technical High School](/source/Arsenal_Technical_High_School), Indianapolis. He married Mary Viola Bruner in 1918 and they had two children. He served in the infantry in 1918-19 before returning to Illinois where he worked as a plant pathologist in the [US Department of Agriculture](/source/United_States_Department_of_Agriculture). He was involved in [barberry](/source/Berberis) eradication programs. Barberry was an alternate host of wheat rust. In 1920 he received an MA from the University of Illinois and in 1921 he joined the Illinois Natural History Survey. He received a doctorate from the University of Illinois in 1934 after working under [Frank Lincoln Stevens](/source/Frank_Lincoln_Stevens). From 1947 he was also a professor of plant pathology.[1] He described several plant-pathogenic [fungi](/source/Fungi)[2][3] and their control.[4][5]

Tehon was interested in the history of the pioneers and played the violin. He also studied Italian, translating a work of [Tozzetti](/source/Giovanni_Targioni_Tozzetti) on fungi. He was active in the Boy Scouts movement.[1]

## References

1. ^ [***a***](#cite_ref-:0_1-0) [***b***](#cite_ref-:0_1-1) Shanor, Leland (1955). ["Leo Roy Tehon: 1895-1954"](https://www.jstor.org/stable/3755670). *Mycologia*. **47** (4): 597–601. [ISSN](/source/ISSN_(identifier)) [0027-5514](https://search.worldcat.org/issn/0027-5514).

1. **[^](#cite_ref-2)** Tehon, L. R. (1939). ["Two New Fungi on Legumes"](https://www.tandfonline.com/doi/full/10.1080/00275514.1939.12017372). *Mycologia*. **31** (5): 537–543. [doi](/source/Doi_(identifier)):[10.1080/00275514.1939.12017372](https://doi.org/10.1080%2F00275514.1939.12017372). [ISSN](/source/ISSN_(identifier)) [0027-5514](https://search.worldcat.org/issn/0027-5514).

1. **[^](#cite_ref-3)** Tehon, L. R.; Daniels, Eve (1925). ["Notes on the Parasitic Fungi of Illinois—II"](https://www.tandfonline.com/doi/full/10.1080/00275514.1925.12020479). *Mycologia*. **17** (6): 240–249. [doi](/source/Doi_(identifier)):[10.1080/00275514.1925.12020479](https://doi.org/10.1080%2F00275514.1925.12020479). [ISSN](/source/ISSN_(identifier)) [0027-5514](https://search.worldcat.org/issn/0027-5514).

1. **[^](#cite_ref-4)** Tehon, Leo R. (1951-12-21). ["Fungistatic Potencies of Some Fluorinated p -Benzoquinones"](https://www.science.org/doi/10.1126/science.114.2973.663). *Science*. **114** (2973): 663–664. [doi](/source/Doi_(identifier)):[10.1126/science.114.2973.663](https://doi.org/10.1126%2Fscience.114.2973.663). [ISSN](/source/ISSN_(identifier)) [0036-8075](https://search.worldcat.org/issn/0036-8075).

1. **[^](#cite_ref-5)** Tehon, Leo R. (1933). ["Notes on the Parasitic Fungi of Illinois"](https://www.tandfonline.com/doi/full/10.1080/00275514.1933.12020664). *Mycologia*. **25** (4): 237–257. [doi](/source/Doi_(identifier)):[10.1080/00275514.1933.12020664](https://doi.org/10.1080%2F00275514.1933.12020664). [ISSN](/source/ISSN_(identifier)) [0027-5514](https://search.worldcat.org/issn/0027-5514).

## External links

- [Pleasure with plants](https://archive.org/details/pleasurewithpla00teho) (1949)

- [Fieldbook of native Illinois shrubs](https://archive.org/details/fieldbookofnativ1942teho) (1942)

- [Peach yellows in Illinois](https://archive.org/details/peachyellowsinil21teho) (1929)

- [A Preliminary Report on the Common Bacterial and Fungous Diseases of Crop Plants in Illinois (1924)](https://www.ideals.illinois.edu/items/45933)

- [Rout the Weeds](https://www.ideals.illinois.edu/items/73536) (1939)

- [The Drug Plants of Illinois](https://hdl.handle.net/2142/73346) (1951)

- [Reconversion for Peace: A Report of the Natural History Survey Division for the Year 1945-46](https://hdl.handle.net/2142/102156) (1946)

- [Epidemic Diseases of Grain Crops in Illinois, 1922-1926](https://hdl.handle.net/2142/45902) (1927)

Authority control databases International ISNI VIAF GND WorldCat National United States Academics CiNii International Plant Names Index Other Open Library Yale LUX

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