This year marks the 200th anniversary of Lewis and Clark's expedition west. One of their missions — ordered by President Thomas Jefferson — was to collect the important agricultural, medicinal and ornamental plants they found along the way. In this hour, we'll look at the plants gathered by Lewis and Clark, and the contributions the expedition made to botany.
*Associate curator of botany, Academy of Natural Sciences in Philadelphia
*Honorary curator, New York Botanical Garden
*Professor Emeritus, University of Maryland
*Research sssociate, Academy of Natural Sciences
Curator, Lewis and Clark: The National Bicentennial Exhibition Missouri Historical Society, St. Louis, Mo.