According to Meehan (1898: 24), Robinson and Greenman questionably identify the collection as Pyrus sambucifolia Cham. & D.F.K. Schltdl. (in Linnaea 2: 36. 1827). Given that the specimen represented a species yet to be described, this is reasonable. Cutright (1969: 416) suggests the specimen might be Sorbus sitchensis M. Roem. (Fam. Nat. Syn. Monogr. 3: 139. 1847). There are two labels on the sheet. The uppermost is an original Lewis label: "No. 24. found the 2th day of Septr. 1805. / a small growth only rising to the / hight of 15. feet moist situations / it seems to prefer. it is a handsome growth." The second label is one prepared by Pursh: "On the tops of the highest / peaks & mountains. / Jun. 27th 1806. / In the Rocky mountains." On 2 Sep 1805, Lewis was in Lemhi Co., Idaho, traveling along the North Fork of the Salmon River from near the mouth of Hull Creek to near the junction of Hammerean Creek (Moulton, 1988: 183-185). On 27 Jun 1806, the expedition was near Hungery Creek along the Lolo Trail in Idaho Co., Idaho (Moulton, 1993: 55-59). It is possible there are two collections here, with the three fragments on the left probably the 2 Sep specimens and the two fragments on the right perhaps gathered on 27 Jun. The lateness of the inflorescences, however, makes it more likely all the fragments were gathered on 2 Sep. The nature of this sheet is similar in many ways to PH-LC 135, a specimen of Lonicera utahensis (see No. 112 above). (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