An image of the specimen in the Lewis and Clark herbarium. . . .
Cleome serrulata (PH-LC 66).
The copyright for this image is retained by the Academy of Natural Sciences of Philadelphia; this image is used with their permission.
This 1806 specimen is particularly interesting as it has a copy of the receipt that Lewis had prepared for Charbonneau in recognition of payment for his services from April 7, 1805 to August 16, 1806