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James W. Horn

James W. Horn

Visiting Scientist

Fax: 202-786-2563
E-mail Address:

Postal Address
(Mail and Packages):

Smithsonian Institution
PO Box 37012
Washington, DC 20013-7012

Courier Address:
National Museum of Natural History
West Loading Dock
10th and Constitution Ave, NW
Washington, DC 20560-0166

     B.S., Plant Biology, Cornell University, Ithaca, NY 1995.
     M.S., Biology, University of North Carolina at Chapel Hill 1997 .
     Ph.D., Duke University, Durham NC 2005.

Areas of Specialty
     Phylogenetic systematics of flowering plants (Dilleniales, Malpighiales, Malvales) and plant anatomy

Recent Publications - (All Publications)

Horn, James W., Xi, Zhenxiang, Riina, Ricarda, Peirson, Jess A., Yang, Ya, Dorsey, Brian L., Berry, Paul E., Davis, Charles C. and Wurdack, Kenneth J. 2014. Evolutionary bursts in Euphorbia (Euphorbiaceae) are linked with photosynthetic pathway. Evolution; International Journal of Organic Evolution, 68(12): 3485-3504. doi:10.1111/evo.12534

Harris, Elizabeth M., Horn, James W. and Wagner, Warren L. 2012. Floral development of the divergent endemic Hawaiian genus Schiedea (Caryophyllaceae), with special emphasis on the floral nectaries. Taxon, 61(3): 576-591.

Horn, James W., van Ee, Benjamin W., Morawetz, Jeffery J., Riina, Ricarda, Steinmann, Victor W., Berry, Paul E. and Wurdack, Kenneth J. 2012. Phylogenetics and the evolution of major structural characters in the giant genus Euphorbia L. (Euphorbiaceae). Molecular Phylogenetics and Evolution, 63(2): 305-326. doi:10.1016/j.ympev.2011.12.022

Zona, Scott, Davis, Philip, Gunathilake, L. A. A. H., Prince, Jeffery and Horn, James W. 2012. Seeds of Eriocaulaceae of the United States and Canada. Castanea, 77(1): 37-45. doi:10.2179/11-032

Moore, Michael J., Hassan, Nasr, Gitzendanner, Matthew A., Bruenn, Riva A., Croley, Matthew, Vandeventer, Alexia, Horn, James W., Dhingra, Amit, Brockington, Samuel F., Latvis, Maribeth, Ramdial, Jeremy, Alexandre, Roolse, Piedrahita, Ana, Xi, Zhenxiang, Davis, Charles C., Soltis, Pamela S. and Soltis, Douglas E. 2011. Phylogenetic Analysis of the Plastid Inverted Repeat for 244 Species: Insights into Deeper-Level Angiosperm Relationships from a Long, Slowly Evolving Sequence Region. International journal of plant sciences, 172(4): 541-558. doi:10.1086/658923

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