My research, including that of my students, focuses on understanding the systematics, historical biogeography, and evolution of flowering plants.

My ongoing research projects include:

1.) Phylogeny, diversification, and evolutionary trajectories in the "Terebinthaceae" (Anacardiaceae and Burseraceae). Collaborators: Paul Fine, UC-Berkeley; Susan Pell, BBG; Douglas Daly & John Mitchell, NYBG, and Brian Moore. NSF-DEB 0919179 (2009-2011).

2.) Phylogeography of Cordia (Boraginaceae) endemic to the Galapagos. Collaborator: Conley McMullen, James Madison University.

In addition to my research and teaching responsibiIities, I am director of the Ted R. Bradley Herbarium at GMU and am engaged in making this valuable resource of information about the Virginia flora available to the public via the internet. The annual reports for the herbarium (pdf) are available for download (2005, 2006, 2007, 2008).

Some recent GMU Gazette articles about my work:

Mason Faculty Members Explore the World in Efforts to Study Environmental Issues: 08/04/2008

Natural Walk Introduces Community to Another Side of Campus:
05/06/2008

Mason's Herbarium Is a Treasure Trove for Scholars: 02/21/2007

Research Experience Shortens Learning Curve for Grad Student: 10/26/2006