MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 161 
Potentilla Anserina sericea Koch, Syn. 213. 1837. 
Ledeb. Fl. Ross. 2: 45; Walp. Ann. 2: 513; Lehm. Del. Sem. Hort. Hamb. 1850: 10. 
Potentilla Anserina holosericea Gaud. Fl. Hely. 3: 405. 1828. 
Leaves silvery white-silky on both sides. 
In America it is confined to the Rocky Mountain Region from the Mackenzie and 
Alaska to New Mexico. Specimens examined: 
Northwest Territory: Miss E. Taylor. 
Assiniboia: John Macoun, No. 10471, 1895. 
Washington: Wilkes’ Expedition, No. 92. 
Oregon: J. 5. Newberry (Williamson Exp.); Dr. Lyall, 1860; H. M. Cronkhite, 
1864. 
California: S. B. Parish, No. 3154, 1894; Fremont (2d Exp.). 
Wyoming: H. Engelmann, 1856. 
Colorado: John Wolf (Wheeler Exp.), No. 382, 1873; G. E. Osterhout, 1893. 
New Mexico: E. Palmer, 1869; Friese. 
Utah: M. E. Jones, No. 14538, 1880; L. F. Ward, No. 155, 1875. 
Arizona: A. L. Anderson, 1863; Lemmon, 1884. 
Argentina Anserina grandis (I. «& G.). 
Potentilla Anserina grandis Torr. & Gray, Fl. N. Am. 1: 444. 1840. 
Ledeb. Fl. Ross. 2: 45; Lehm. Rev. Pot. 189; Del. Sem. Hort. Hamb. 1850: 10; 
Lange, Consp. Fl. Groen. 5; Macoun, Cat. Can. Pl. 141; Rosenvinge, Fl. Groen. 655; 
Walp. Ann. 2: 514. 
Rydb. Bull. Torr. Bot. Club, 24: 18. 
Potentilla Pacifica Howell, Fl. N. W. Am. 1: 179. 1898. 
Leaves often 3-4 dm. long, erect; leaflets oblong, 4-7 em. long. 
Growing in grassy places and quite common in Washington and British Columbia, 
but extending into California and to the arctic regions. The following specimens have 
been examined: 
Alaska: A. Kellogg, No. 190, 1867. 
British Columbia: John Macoun, 1889. 
Vancouver Island: Dr. Lyall, 1858; John Macoun, No. 178, 1893. 
Washington: Wilkes’ Exp., No. 72; Dr. Scouler, No. 218; T. Howell, 1885; W. N. 
Suksdorf, 1884. 
Oregon: T. J. Howell, 1882. 
California: H. N. Bolander; Mrs. R. M. Austin, No. 65, 1886. 
