Bachelor of Science, Arizona State University, 1974. Master of Science, Arizona State University, 1976. Doctor of Philosophy, University Texas, 1980.
Assistant professor, U. Colorado, Boulder, 1980-1988;
associate professor, U. Colorado, Boulder, 1988-1989;
associate professor, curator division botany Natural History Museum,, U. Kansas, Lawrence, 1989-1996;
professor, U. Kansas, Lawrence, since 1997. Visiting assistant professor of University Wyoming, Laramie, 1985-1986. Visiting scholar U. Connecticut, Storrs, 1989.
Consultant editor McGraw-Hill Encyclopedia of Science and Technology, New York City,1985-1992. Program director National Science Foundation, 1995-1997. Research associate Smithosonian Institute, since 1995.
Agency representative National Science and Technology Council, 1997.
Member American Society Plant Taxonomists (secretary 1986-1988, program director 1986-1990, councillor 1993-1996, Cooley award 1982), Botanical Society of America (section chairman 1984-1986, section secretary 1986-1990), International Organization for Plant Biosystematics (councillor 1989-1992), International Association Plant Taxonomists, California Botanical Society.
Married Donald W. Longstreth, April 6, 1974 (divorced February 1985).