> [!cite] BHL link: this entry starts at [page 193](https://www.biodiversitylibrary.org/page/33265870) of TL-2 Suppl. IV > Author links: [IPNI](https://www.ipni.org/a/1678-1) LSID 1678-1, [Wikidata](https://www.wikidata.org/wiki/Q21508704) QID Q21508704 > Support pages: [[Abbreviations|abbreviations]], [[Layout key|layout key]], [[Cite TL-2|cite TL-2]] ### Author Clausen, Roy Elwood (1891-1956), American botanist who dedicated his entire professional life on the cytogenetics of Nicotiana, born at Randall, Iowa, d. Berkeley, Calif., on public schools at Randall 1897, and Newkirk, Oklahoma 1900, at the University of Oklahoma at Stillwater, B.Sc. Agric. 1910, Dr. phil. 1910, at the University of California, Berkeley 1910, Ph.D. biochemistry 1914, at the Division of Genetics Dept. Agr. 1914-1945. **Abbreviated name**: *R.E. Clausen* \[standard form in IPNI: *R.E.Clausen*\] #### Herbarium and types [[Collection UC|UC]]. #### Bibliography and biography Barnhart 1: 354 (b. 21 Aug 1891, Randall, Iowa, d. 21 Aug 1956, Berkeley, Calif.); Kew 1: 566; LS suppl. 5229; Stevenson p. 1238. #### Biofile - Ewan, J. et al., Short hist. bot. U.S. 18, 122. 1969. - Jenkins, J.A., Biogr. mem. nat. Acad. sci. 39: 37-54, *1 pl*. 1967 (biogr., phot.). ### Publications ##### n.26.520. F-1 species hybrids between Nicotiana sylvestris and varieties of Nicotiana tabacum **Title** The nature of the *F-1 species hybrids between Nicotiana sylvestris and varieties of Nicotiana tabacum* with special reference to the conception of the reaction system contrasts in heredity... Berkeley (University of California Press) 1917. Oct. **Abbreviated title**: *F-1 sp. hybr. Nicotiana*. **Notes** *Co-author*: Thomas Harper Goodspeed (1887-1966). *Publ*.: 17 Jan 1917 (in journal), cover-t.p., p. \[301\]-346, *pl. 37-48.* *Copies*: L, U. – Issued as Univ. Calif. Publ. Bot. 5(11): 301-346, *pl. 37-48.* 1917. ##### n.26.521. apparatus for flower measurement **Title** An *apparatus for flower measurement*... University of California Publications in Botany... 1918. Oct. **Abbreviated title**: *Appar. fl. measur.* **Notes** *Co-author*: (first author) Thomas Harper Goodspeed (1887-1966). *Publ*.: 25 Sep 1918 (date on p. \[435\]), cover-t.p., p. \[435\]-438 \[sic, not 437 as on cover-t.p., p. 437= *pl. 54*\]. *Copies*: L, U. – Issued as Univ. Calif. Publ. Bot. 5(14): 435-438, *pl. 54* (in text). 1918. ##### n.26.522. Interspecific hybridization in Nicotiana **Title** *Interspecific hybridization in Nicotiana* I \[-XIII\], Berkeley (University of California Press) 1922 \[-1932\]. Oct. **Notes** *Publ*.: *1* (*On the results of backcrossing the F-1 sylvestris-tabacum hybrids to sylvestris*...): 10 Aug 1922 (in journal), cover-t.p., p. \[1\], \[2, date of issue\], \[3\]-30. *Copy*: L. – Issued as Univ. Calif. Publ. Bot. 11(1): 1-30. 1922. – First author: Thomas Harper Goodspeed (1887-1966). *2* (*A tetraploid glutinosa-tabacum hybrid*...): Mai 1925 (in journal), cover-t.p., p. \[278\]-284. *Copy*: L. – Reprinted and to be cited from Genetics 10: 278-284. 1925 – Second author: T.H. Goodspeed. *3* (*The monosomic tabacum derivative*...): 14 Oct 1926 (date on p. \[ii\]), cover-t.p., p. \[ii-iv\], \[83\]-101. *Copies*: L(2). – Id. 11(4): 83-101. 1926 – Second author: T.H. Goodspeed. – *Note*: Reprint combined with *Inheritance in Nicotiana tabacum*, vii (see below). *4* (*Some cytological features*...): 9 Nov 1926 (date on p. \[ii\]), cover-t.p., p. \[i-ii\], \[103\]-115. *Copies*: L(2). – Id. 11(5): 103-115. 1926 – First author: T.H. Goodspeed (1887-1966), third author Ruth Harriet Chipman (née Hayes) (1895-?). *5* (*Cytological features*...): 17 Mar 1927 (date on p. \[ii\]), cover-t.p., p. \[i-ii\], \[117\]-125. *Copy*: L. – Id. 11(6): 117-125. 1927 – First author: T.H. Goodspeed. *6* (*Cytological features*...): 4 Oct 1927 (date on p. \[ii\]), cover-t.p., p. \[i-ii\], \[127\]-140. *Copy*: L. – Id. 11(7): 127-140. 1927 – First author: T.H. Goodspeed. *7* (*The Cytology of hybrids*...): 26 Mai 1928 (date on p. \[ii\]), cover-t.p., p. \[i-ii\], \[177\]-211. *Copy*: L. – Id. 11(10): 177-211. 1928 – Clausen only author. *8* (*The sylvestris-tomentosa-tabacum hybrid*...) 29 Dec 1928 (date on p. \[ii\]), cover-t.p., p. \[i-ii\], \[245\]-256. *Copy*: L. – Id. 11(13): 245-256. 1928 – First author: T.H. Goodspeed. *9* (Not by Clausen). *10* (*Haploid and diploid merogony*): Mai-Jun 1929 (date on p. \[279\]), p. \[279\]-282. *Copy*: L. – *Co-author*: W.E. Lammerts. – Reprinted and to be cited from Amer. Natural. 63(686): 279-282. 1929. *11* and *12* (Not by Clausen). *13* (*Further data as to*...): 9 Jun 1932 (in journal). – Published in Svensk Bot. Tidskr. 26(1-2): 123-136. 1932. – No reprint seen. – Clausen only author. ##### n.26.523. Inheritance in Nicotiana tabacum **Title** *Inheritance in Nicotiana tabacum* I \[-XXVIII\]. 1922 \[-1957\]. Oct. **Notes** *Publ*.: *1* (*A report on the results of crossing certain varieties*): 14 Apr 1922 (in journal), cover-t.p., p. \[457\]-582, pl. 55-85. *Copies*: L, U. – *Co-authors*: William Albert Setchell (1864-1943) (first author), see TL-2/5: 528-535, and Thomas Harper Goodspeed (1887-1966). – Issued as Univ. Calif. Publ. Bot. 5(17): 457-582, *pl. 55-85.* 1922. *2* (Not by Clausen). *3* (*The occurrence of two natural periclinal chimeras*): Mar 1923 (date on cover-t.p.), cover-t.p., p. \[i\], \[97\]-105. *Copy*: L. – Reprinted and to be cited from Genetics 8: 97-105. 1923. – Second author T.H. Goodspeed. *4* (*The trisomic character of "enlarged"*): Mar 1924 (date on cover-t.p.), cover-t.p., p. \[i\], \[181\]-197, folded table. *Copy*: L. – Id. 9: 181-197, folded table. 1924. – Second author T.H. Goodspeed. *5* (*The occurrence of haploid plants in interspecific progenies*): Apr 1924 (date on cover-t.p.), cover-t.p., p. \[121\]-124. *Copy*: L. – Id. from Proc. Natl. Acad. Sci. 10(4): 121-124. 1924. – Second author Margaret Campbell Mann (1891-x). *6* (Not by Clausen). *7* (*The monosomic character, "fluted"*): 14 Oct 1926 (date on p. \[ii\]), cover-t.p., p. \[i-ii\], \[61\]-82, *pl. 1-3.* *Copies*: L(2). – Issued as Univ. Calif. Publ. Bot. 11(3): 61-82, *pl. 1-3.* 1926. *– Note*: Reprint combined with Interspecific hybridization in Nicotiana iii (see above). *8* and *9* (Not by Clausen). *10* (*Carmine-coral variegation*): 1930 (mss. submitted 13 Apr 1930), cover-t.p., p. \[358\]-368. *Copy*: L. – Reprinted and to be cited from Cytologia 1(4): 358-368. 1930. *11* (*The fluted assemblage*): 1931, published in Amer. Natural. 65: 316-331. 1931. – No reprint seen. – Clausen only author. *12* (*Transmission features of carmine-coral variegation*): 1931, published in Z. für Züchtung, Reihe A, Pflanzenzüchtung 17(1-2): 108-115. 1931. – No reprint seen. – Clausen only author. *13-17* (Not by Clausen). *18* (*Monosomic analysis*): 1944, published in Genetics 29: 447-477. 1944. – No reprint seen. – Co-author Donald Ross Cameron (1907-x), see TL-2, suppl. 3: 321. *19-22* (Not by Clausen). *23* (*Duplicate factors for chlorophyll production*): 1950, published in Genetics 35: 4-10. 1950. – No reprint seen. – Co-author Donald Ross Cameron (1907-x), see TL-2, suppl. 3: 321. *24-27* (Not by Clausen). *28* (*The cytogenetics of introgression*): 1957, published in Proc. Natl. Acad. Sci. 43: 908-913. 1957. – No reprint seen. – Co-author Donald Ross Cameron (1907-x), see TL-2, suppl. 3: 321. ##### n.26.524. Interspecific hybridization **Title** *Interspecific hybridization* and the origin of species *in Nicotiana*... Sonderabdruck aus den Verhandlungen des V. Internationalen Kongresses für Vererbungswissenschaft... Berlin 1927... Leipzig (Verlag von Gebrüder Borntraeger) 1928. Oct. **Notes** *Publ*.: 1928, cover-t.p., p. \[547\]-553. *Copy*: L. – Reprinted and to be cited from Suppl.-Bd. I, Z. indukt. Abstamm. Vererb.-Lehre 1928: 547-553.