Previous explorers and trading ships came back from the Northwest Coast with reports of forests thick with gigantic spruce, western redcedar, and firs. What would Lewis report of this natural resource? And what of the cottonwoods along the drainages everywhere else?
Western Redcedar
Thuja plicata
by Joseph A. Mussulman
The tree that caught the Corps’ attention west of today’s Lolo Pass was a species that is unique to the Far West of North America, the western redcedar.
Douglas’s Six Firs
David Douglas's "American Pines"
by James L. Reveal
James Reveal explains how two copies of a Douglas manuscript show he used Lewis and Clark as a reference in his descriptions of six “American Pines.”
Rafinesque’s Six Firs
Full text with commentary
by James L. Reveal
When he wrote his 1832 paper, Rafinesque did not see actual specimens. He knew about the plants only from the 1814 Biddle publication of Lewis’s descriptions. Provided here is the full text of that paper with commentary.
Douglas-fir
A nomenclatural morass
by James L. Reveal
The nomenclatural morass associated with the scientific name of Douglas-fir, Pseudotsuga menziesii, is a long and complex tale and tied closely with the early explorations along the western coast of North America . . . .
Wild Cherries
by Kristopher K. Townsend
As the expedition moved across the Northern American continent, Lewis took particular notice of the changes he saw in the wild cherries. For a deeper dive into the Lewis and Clark Expedition’s encounters with wild cherries, see these four articles.
Fire-loving Forests
by Sarah Walker
Fire has been part of the Bitterroot Mountain landscape for a long time. No wonder Clark saw “emence quantity of falling timber which had falling from dift. causes i e. fire & wind.”
Quaking Aspen
Populus tremuloides
by Mark Behan
More than a year into the expedition, Lewis recognized a tree native to New England in the middle of Montana. The generic name, Populus is Latin for Aspen.
Cottonwoods
Populus sp.
by Joseph A. Mussulman, Kristopher K. Townsend, Mark Behan
During the Expedition, they encountered four species of cottonwood trees as they moved across North America. One wonders how they would have managed without them.
The Osage Orange
Maclura pomifera
by James L. Reveal, Joseph A. Mussulman
Its oak-strong, hickory-tough wood made powerful, reliable hunting bows. Early French explorers and traders translated its Indian name into bois d’arc,–”wood for a bow,” which was easily anglicized into “bodark.”
Lewis’s Five Firs
by James L. Reveal, Joseph A. Mussulman
Lewis describes one of the richest resources of the Pacific northwest coast: Sitka spruce, western hemlock, grand fir, perhaps the Pacific silver fir, and Douglas-fir.
Indigenous Forestry
by Joseph A. Mussulman
Archaeological evidence indicates that deliberate burning of forests and fields has been occurring on the North American continent for at least the past 10,000 to 20,000 years.
Experience the Lewis and Clark Trail
The Lewis and Clark Trail Experience—our sister site at lewisandclark.travel—connects the world to people and places on the Lewis and Clark Trail.
Discover More
- The Lewis and Clark Expedition: Day by Day by Gary E. Moulton (University of Nebraska Press, 2018). The story in prose, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals: An American Epic of Discovery (abridged) by Gary E. Moulton (University of Nebraska Press, 2003). Selected journal excerpts, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals. by Gary E. Moulton (University of Nebraska Press, 1983–2001). The complete story in 13 volumes.
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