The lectotype designated by Cronquist does not fully agree with Pursh's description in all of its details that were clearly taken from the Lambert sheet (PH-LC 22). Although Cronquist cites the type as "Lewis 6" and terms it the "holotype," there is no question he means Lewis 60 given the location he quotes, which was where Lewis and Clark were on 1 Oct 1804, the date given on the sheet. In accordance with the Code (Greuter et al., 1993), we correct Cronquist's declaration of a "holotype" to a lectotype. The lectotype was collected near the mouth of the Cheyenne River in Stanley Co., South Dakota (Moulton, 1987a: 470). The remaining sheets (PH-LC 20-22), all duplicates of Lewis 55, represent a second collection made the following day (2 Oct 1804) above the mouth of the Cheyenne River near the Sully-Potter Co. line in South Dakota (Moulton, 1987a: 470). (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:10/01/1804

Artemisia cana Pursh, Fl. Amer. Sept.: 521. Dec (sero) 1813. - Lectotype: Lewis 60, PH-LC 19 (Moulton 17a), designated by Cronquist (Interm. Fl. 5: 162. 1994). Paratypes: PH-LC 20 (Moulton 17b), PH-LC 21 (Moulton 17c) and PH-LC 22 (Moulton 17d). The lectotype designated by Cronquist does not fully agree with Pursh's description in all of its details that were clearly taken from the Lambert sheet (PH-LC 22). Although Cronquist cites the type as "Lewis 6" and terms it the "holotype," there is no question he means Lewis 60 given the location he quotes, which was where Lewis and Clark were on 1 Oct 1804, the date given on the sheet. In accordance with the Code (Greuter et al., 1993), we correct Cronquist's declaration of a "holotype" to a lectotype. The lectotype was collected near the mouth of the Cheyenne River in Stanley Co., South Dakota (Moulton, 1987a: 470). The remaining sheets (PH-LC 20-22), all duplicates of Lewis 55, represent a second collection made the following day (2 Oct 1804) above the mouth of the Cheyenne River near the Sully-Potter Co. line in South Dakota (Moulton, 1987a: 470). The following is material added to this electronic publication (E. E. Spamer and R. M. McCourt, PH). Subsequent to 1995-1996 photography for Moulton's (1999) illustration of sheet PH-LC 20, the following annotation label has been added: "Leaf fragment removed for biogeochemical analysis Mark A Teece Geophysical Laboratory Carnegie Institution of Washington Removed 18 Dec 1997". (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:10/02/1804

Artemisia cana Pursh, Fl. Amer. Sept.: 521. Dec (sero) 1813. - Lectotype: Lewis 60, PH-LC 19 (Moulton 17a), designated by Cronquist (Interm. Fl. 5: 162. 1994). Paratypes: PH-LC 20 (Moulton 17b), PH-LC 21 (Moulton 17c) and PH-LC 22 (Moulton 17d). The lectotype designated by Cronquist does not fully agree with Pursh's description in all of its details that were clearly taken from the Lambert sheet (PH-LC 22). Although Cronquist cites the type as "Lewis 6" and terms it the "holotype," there is no question he means Lewis 60 given the location he quotes, which was where Lewis and Clark were on 1 Oct 1804, the date given on the sheet. In accordance with the Code (Greuter et al., 1993), we correct Cronquist's declaration of a "holotype" to a lectotype. The lectotype was collected near the mouth of the Cheyenne River in Stanley Co., South Dakota (Moulton, 1987a: 470). The remaining sheets (PH-LC 20-22), all duplicates of Lewis 55, represent a second collection made the following day (2 Oct 1804) above the mouth of the Cheyenne River near the Sully-Potter Co. line in South Dakota (Moulton, 1987a: 470). (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:10/02/1804