Positions Held

Professor, Biological Sciences Department, California State Polytechnic University, Pomona. Sep 1988-present.

Adjunct Professor, Rancho Santa Ana Botanic Garden, Claremont. Jan 1994-present.

Associate Professor, Biological Sciences Department, California State Polytechnic University, Pomona. Sep 1984-Sep 1988.

Assistant Professor, Biological Sciences Department, California State Polytechnic University, Pomona. Sep 1980-Sep 1984.

Lecturer, Department of Botany, University of California, Davis. Jan-Jun 1980.

Staff Research Associate, Department of Ecology and Evolutionary Biology, University of California, Irvine. Jun-Sep 1979.

Lecturer, Department of Botany, University of California, Davis. Apr-Jun 1979.

Graduate Teaching Assistant, Department of Botany, University of California, Davis. Oct 1978-Mar 1979; Oct-Dec 1977; Jan-Jun 1977.

Graduate Teaching Assistant, University of Oklahoma Biological Station. May-Jul 1973; May-Jul 1974.

Graduate Teaching Assistant, Department of Botany and Microbiology, University of Oklahoma. Sep 1972-May 1973.