Meehan (1898: 37) lists the specimen as a species of Krynitskia. Piper tentatively annotated the collection Amsinckia intermedia Fisch. & C. A. Mey. (Index Sem., Hort. Petrop. 2: 26. 1836) and Moulton (in press) takes up this name. The rugose hairs on the stem are diagnostic. The specimen was apparently collected at Rock Fort Camp near The Dalles in Wasco Co., Oregon, on 17 Apr 1806 (Moulton, 1991: 130-132). Interestingly, Suksdorf gathered the type of Amsinckia retrorsa near Bingen, Klickitat Co., Washington, only a short distance away. Cronquist (in Cronquist et al., 1984: 277-278) suggests Amsinckia retrorsa might well be included within the related A. menziesii (Lehm.) A. Nelson & J. F. Macbr. (Bot. Gaz. 61: 36. 1916). We concur, and thus make the above new combination. (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:04/17/1806