The label indicates that the specimen was gathered along Collins Creek, Idaho Co., Idaho, on 16 Jun 1806. Collins Creek is now known as Lolo Creek (Cutright 1969: 208). Lewis made a series of collections of both plants and animals at this location but no mention is made of this particular species (Moulton, 1993: 28). (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:06/16/1806