President Jefferson instructed Meriwether Lewis to collect information on “the soil & face of the country, [its] growth & vegetable productions… the animals of the country generally, especially those not of the U.S.” In fulfilling these instructions, members of the Expedition were the first to describe for science 178 plants. The explorers’ written descriptions and the seeds and specimens they collected were Jefferson’s window onto the new west.
Learn more about some of the plants collected and used by the Expedition:
Did You Know?
For 200 years, the Expedition journals have been the source for knowledge and understanding of the Corps of Discovery. There are, however, more than 50 tribes whose oral histories also record the events and people of the Corps.