Meehan (1898: 37) questionably reports this as Phacelia menziesii R. Br. (in Franklin, Narr. Journey Polar Sea: 764. 1823), a later synonym. The type was collected along the Columbia River at Rock Fort Camp near The Dalles in Wasco Co., Oregon, on 17 Apr 1806 (Moulton, 1991: 130-135). Pursh gave the location as "On the banks of the Missouri." (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