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About Dr. Don Mansfield



Botany, plant systematics, plant physiology  

Personal Statement

Professor Mansfield has been at The College of Idaho since 1989. He teaches organismal biology, environmental science, field botany, Idaho natural history, and a course about plants and people entitled Murder, Medicine and Magic. His scholarly interests include the distributions of plants in southwestern Idaho and southeastern Oregon and the biology of rare plants. He has ongoing collaborative research projects in which students study the morphologic, ecologic, and genetic variation of biscuitroot (genus Lomatium) plants to clarify taxonomic and evolutionary relationships. In these projects, students undertake scientific research at a meaningful, often publishable level. Recently Dr. Mansfield received a National Science Foundation grant to provide funds for student internships to image and database the more than 50,000 specimens of the College’s Herbarium—one of the premier plant “libraries” for southwestern Idaho and surroundings.

Dr. Mansfield has led several student trips sponsored by the Biology or Environmental Studies Department to Death Valley, the Oregon coast, the Owyhee River and desert, Boise mountains, Boise River, Birds of Prey National Conservation Area, southwest Idaho organic farms, Australia, Costa Rica, Belize and Hawaii. He believes these trips contribute to learning by allowing students to gain hands-on experience with plants, animals, and biotic systems in their natural settings. He is currently writing a flora of the Owyhee region of southwestern Idaho and southeastern Oregon.

What Mansfield appreciates most about teaching at The College of Idaho is interacting with motivated, inquisitive students.


Professional Experience

The College of Idaho, Professor of Biology (1989-)

Rollins College, Assistant Professor of Biology (1984-1989)

The Colorado College, Visiting Assistant Professor (1981-1984)

University of California, Davis, Postdoctoral Research Associate (1979-1981)


  • D. A. Biology, Idaho State University
  • M. Sc. Botany, University of British Columbia
  • B.A. Biology, The Colorado College


  Stevens, M., D.H. Mansfield, J.F. Smith, and M.A.E. Feist. 2018.  Resolving the anomaly of Lomatium anomalum: Discovery of a new species in southwestern Idaho (U.S.A.), Lomatium andrusianum (Apiaceae). J. Bot. Res. Inst. Texas 12(1):1-15. (Undergraduate student in bold)
  Mansfield, D.H., B.L. Wilson, J.F. Smith, and M. Darrach.  2018.  Lomatium filicinum: A new combination epitypified with recently described Lomatium basalticum (Apiaceae).  Phytoneuron 2018-33:1-4.
  Smith, J.F., D.H. Mansfield, M. Stevens, E. Sosa, M.E. Feist, S.R. Downie, G.M. Plunkett, and M. Darrach. 2018. Try tri again: Resolving species boundaries in the Lomatium triternatum (Apiaceae) complex using molecular phylogenetic tools. J. Syst. Evol. 56(3):218-230.  (Undergraduate student in bold)
  Mansfield, D.H., M. Darrach, S.R. Downie, M.E. Feist, R.L. Hartmann, K.M. Mason, G.M. Plunkett, J.F. Smith, and B.L. Wilson. 2017.  New combinations in Pseudocymopterus and Cymopterus (Apiaceae).  Phytoneuron 2017-57:1-4.
  Feist, M.E., J.F. Smith, D.H. Mansfield,  M. Darrach, R.P. McNeill, S.R. Downie, G.M. Plunkett, and B.L. Wilson.  2017.  New combinations in Lomatium (Apiaceae subfamily Apioideae).  Phytotaxa 316(1):95-98.
  Brown, B. and D.H. Mansfield. 2017. Edaphic and geographic origins of varietal differentiation in Eriogonum calcareum. Madroño 64(1):22-31.  (Undergraduate student in bold)
  Mansfield, D.H., M. Stevens, L. Polito, J.F. Smith, M. Darrach.  2016.  Lomatium basalticum (Apiaceae), a new species from the vicinity of Hells Canyon in Oregon and Idaho. Phytoneuron 2016-74:1-13.  (Undergraduate student in bold)
  Connelly, J.W., D.H. Mansfield, R. Rosentreter, and E. Yensen. 2016. Our view— Greater sage-grouse habitat restoration: Sound science or wishful thinking?      Grouse News 51:5-12.
  Mansfield, D.H. 2015. The discovery of two new desert parsleys from southeastern Oregon: Lomatium ravenii var. paiutense and Lomatium bentonitum. Kalmiopsis 21:17-25.
  Elvin, M.A., D.H. Mansfield, and B. Ertter. 2014. A new species of Monardella (Lamiaceae) from southeastern Oregon and adjacent Idaho, U.S.A. Novon 23(3): 268-274.
  George, E., D.H. Mansfield, J.F. Smith, R. Hartman, S. Downie, and C. Hinchliff. 2014. Phylogenetic analysis reveals multiple cases of morphological parallelism and taxonomic polyphyly in Lomatium (Apiaceae). Systematic Botany 39 (2):662-675.  (Undergraduate student in bold)
  Reveal, J.L. and D.H. Mansfield. 2014b. Recognition of Eriogonum calcareum var. sceptrum (Polygonaceae), an Idaho endemic. Phytoneuron 2014-18:1-2.
  Reveal, J.L. and D.H. Mansfield.  2014a. Two new varieties of Eriogonum ovalifolium (Polygonaceae) from the Intermountain West, United States. Phytoneuron 2014-1:1-8.
  Carlson, K.M., D.H. Mansfield, and J.F. Smith. 2011b. A new variety of Lomatium ravenii (Apiaceae) from the northern Great Basin and adjacent Owyhee region. Aliso 29(2):105-114.  (Undergraduate student in bold)
  Carlson, K.M., D.H. Mansfield and J.F. Smith.  2011a. A new species in the Lomatium foeniculaceum (Apiaceae) clade revealed through combined morphometric and phylogenetic analyses. Systematic Botany 36(2):495-507.  (Undergraduate student in bold)
  Mansfield, D.H. 2010. Vascular flora of the Owyhee River watershed in Oregon. J. Idaho Acad. Science 46(2):1-127.
  Mansfield, D.H. and M. Markin. 2009. Noteworthy Collections in Oregon. Madroño 56(2):131-134.  (Undergraduate student in bold)
  Mansfield, D. H. and M. Markin. 2009.  Noteworthy Collections in Idaho. Madroño 56(2):130-131.  (Undergraduate student in bold)