Only a bug-chewed label is now present. If the specimen was a species of Angelica then the plant was probably A. dawsonii S. Watson (in Proc. Amer. Acad. Arts 20: 369. 1885). This conclusion is based on the two locations cited on the label. Flowering material was gathered on 3 Sep 1805 near Lost Trail Pass on the border of Idaho and Montana, but probably in Missoula Co., Montana, and on the Lolo Trail east of Hungery Creek in Idaho Co., Idaho, on 25 Jun 1806. Angelica dawsonii is seen occasionally in both areas. However, Moulton (1993: 31) properly notes that Ligusticum verticillatum (Geyer) J. M. Coult. & Rose (in Contr. U.S. Natl. Herb. 3: 320. 1895) was seen earlier (16 Jun), and while less common than A. dawsonii, it is found in the Hungery Creek area. It is not common in the Lost Trail Pass region. Cutright (1969: 402) suggests the plant was A. arguta Nutt. (in Torr. & A. Gray, Fl. N. Amer. 1: 620. 1840), correcting the name proposed by Piper (in Thwaites, 1904: 5: 138), namely A. lyallii S. Watson (in Proc. Amer. Acad. Arts 17: 374. 1882). It must be noted that events of 3 Sep 1805 were rather unpleasant for the expedition, the country was steep and rocky, and snow as on the ground with rain and sleet falling (Moulton, 1988: 185-187). Even their exact whereabouts is debated. Perhaps finding something in flower brightened the day! (The Lewis & Clark Herbarium Digital Imagery Study Set, ANSP, 2002) On deposit at the Academy of Natural Sciences, Philadelphia Collected by:Meriwether Lewis & William Clark