Crum and Anderson (1981) refer to the species as Stokesiella praelonga (Hedw.) Robins. Robinson (1967) and Ireland et al. (1980) recognized this as S. oregana, but Anderson et al. (1990) retained this species in its original genus described by Jaeger: Eurhynchium oreganum (Sull.) Jaeg. (Ber. S. Gall. Naturw. Ges. 1876-77: 361. 1878. Ad.2: 247). Many workers follow the more conservative taxonomy of Crum et al. (1990). This specimen was collected at Fort Clatsop, Clatsop Co., Oregon, on 20 Jan 1806. (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:01/20/1806