This plant was collected in 1834 by Thomas Nuttall somewhere in the Rocky Mountains. It has never again been collected on his trail, and it is not known just where he got it. The information he gives is confusing, but it is probable that the plant was collected either in eastern Wyoming or near the Snake River plain in Idaho.
Proceedings of the Iowa Academy of Science
© Copyright 1942 by the Iowa Academy of Science, Inc.
Goodman, George J.
"The Story of Parthenium alpinum,"
Proceedings of the Iowa Academy of Science, 49(1), 253-253.
Available at: https://scholarworks.uni.edu/pias/vol49/iss1/111