The American Philosophical Society sheet (PH-LC 203) has two original Lewis labels, Lewis 39A and Lewis 39B. In Lewis's "List of specimines of plants collected by me on the Mississippi and Missouri rivers" (Moulton, 1987a: 451-472), only 39A is recorded (p. 469). According to Moulton, the collection was made on 4 Sep 1804 at the mouth of the Niobrara River in Knox Co., Nebraska. Nuttall (1818: 240) indicates Lewis called the plant "Rabbit Berry." Given the information on the label, this appears to be Lewis's first encounter with the plant along the Missouri. There are three shoot fragments on PH-LC 203. The one on the left is a single stalk with the new growth broken where it joins the old growth. We assume this fragment is 39A. The two smaller fragments to the right appear to be younger, namely new growth with leaves just starting to form. These may be 35B, although there is no close association of the label with these fragments. The lectotype (PH-LC 204) has a label written in Pursh's hand. This has essentially the same data as that found on PH-LC 203; only the words "Hippophäe argentea" have been added. We assume the specimen on this sheet was cut off the left fragment on PH-LC 203 based on the matching cut angles and stem sizes. Pursh makes a point of stating he saw fruits: "This shrub resembles Elaeagnus argentea so much, that they might easily be mistaken one for the other without fruit; but this species bears really a berry, different from the drupa of the other genus." He then goes on to say: "The flowers are according to information from Mr. Nuttall four-cleft, and resemble those of Elaeagnus very much." Therefore, it is not likely that there was a second Lewis collection of flowering specimens. We suggest that 39B may refer to a packet of fruits or live plants. No fruits are now associated with the extant herbarium specimens, but fruits were probably associated with the specimens in the past. In Lewis's "List of specimines," no seed packet of Shepherdia argentea is mentioned. However, when the Lewis material was accessioned by the American Philosophical Society on 16 Nov 1805, Lewis reportedly stated that "Some plants are sent down by the barge to the care of Capt Stoddart at St. Louis" (see Moulton, 1987a: 464). It is possible, 39B alludes to the live plants. (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:09/04/1804