The label information is confusing as the location is given as "near Counsel Bluffs," but supposedly the collection was made on 14 Sep 1806 when Lewis and Clark were in Leavenworth Co., Kansas. The rapidly returning expedition passed Council Bluff in Washington Co., Nebraska on 8 Sep 1806. There are two fragments on the sheet, but they seem to represent only a single collection with a single branch broken into two parts. Coues (1898: 297) lists the plant as Cissus ampelopsis Pers. (Syn. Pl. 1: 142. 1805), a nomenclatural synonym of Ampelopsis cordata. (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 Collection date:09/08/1806