B.G.S., University of Michigan, 1976.
B.S., Biology, Metropolitan State College, Denver, 1979.
M.S., Botany, Washington State University, 1981.
Ph.D., Botany, University of Texas at Austin, 1990.

Research Fellow, Department of Botany, The Natural History Museum, London.
Secretary, Special Committee on Lectotypification of the XVth International Botanical Congress.
Editorial Committee, The International Code of Botanical Nomenclature.
Botanical Curator and member of the Curatorial Collections Committee, The Linnean Society of London, 1990-1993.

Systematics of Valeriana, particularly New World/Mesoamerican floristics/botanical nomenclature/typification of linnaean and other 18th Century plant names.

Research includes studies of the systematics of the genus Valeriana and other Valerianaceae, particularly in the New World, and the Flora Mesoamericana Project. A collaborative venture of the Missouri Botanical Garden, the Universidad Autónoma de México and the Natural History Museum, London, the Project is producing a modern, comprehensive flora for Panama, Central America and México east of Oaxaca and Veracruz. Volume six (monocots) was published in 1994, volume one (pteridophytes) in 1995. The remaining five volumes will be published by 2000. The Searle Herbarium is a vital resource for any floristic account of mesoamerica, as it contains one of the largest and most comprehensive mesoamerican plant collections.

Prior to arriving at The Field Museum, I spent five years at the Natural History Museum, London, collaborating with Charles Jarvis on the Linnaean Plant Name Typification Project. The Linnaean Project's goal is to identify, evaluate and catalogue the potential type material for the 10,000 plant names published by Carl Linnaeus. The results will appear in an annotated catalogue and in a computerized database which will be available on-line. In 1993, we published a list of the 1,300 Linnaean generic names and their types, including the first effective typifications for 451 names.