This entry describes one of 30 specimens that were sent to President Jefferson from Fort Mandan and then logged into the Museum in Philadelphia on November 16, 1805, but subsequently lost. We include this species as an example of the breadth of discovery and the explorers’ scholarship; attribution to this species is based upon Lewis’ description, early botanical work on the specimens, current botanical literature, and knowledge of the regional flora.
Capt. Lewis, July 18, 1804 - N°. 29. Taken on the 18th of July. an annuel plant puting up many branches from the root has a leaf like the pateridge bea[n], is jointed bears a number of yellow pea-like flowers which grow on the seed stems which project from the main branches and which are unattended with leaves; these flowers grow all arround this stem and give it the appearance of a tausell. the [l]eaf stems ar[e] long and have 24 par of leaves.