418 THE AMERICAN MIDLAND NATURALIST 
568. Tridophyllum paradoxum (Nutt.) Greene, 1. c. 
Potentilla paradoxa Nutt.; Torr. & Gray, FJ. N. Amer. I: 
437. (1840). 
_ Potentilla supina Am, Authors, not Linn. 
Leeds, Peninsula of Lake Ibsen, Devils Lake. X 
569. Tridophyllum Nicolletii (S. Wats.) Greene, 1. c. 
Potentilla supina var. Nicolletii S. Wats. Proc. Am. Acad. 
8553. (1873). 
Potentilla Nicolletit Sheldon, Bull. Nat. Hist. Surv. Minn. 
9: 16. (1894). 
Leeds. 
DRYMOCALLIS. Foutr. Am. Soc. Linn.’ Lyon! itaara 
270 ..-( 1868)! 
570. Drymocallis arguta (Pursh) Rydb. Mem. Dept. Bot. 
Columbia Univ. 2: 192. (1898). 
Potentilla arguta Pursh Fl. Am. Sept. 736. (1814). 
Geum agrimonioides Pursh, 1. c. (1814), not P. agrimonioides 
Bieb. (1808). 
Leeds, Butte. 
DASTPHORA ‘Rafineésque, Ant)\ Bot. ¢167.. (1838): 
Pentaphylloides Morison, Ox. 2: 193. (1715), name undesirable 
as built on Pentaphyllum. 
571. Dasiphora fruticosa (Linn.) Rydb. Mem. Bot. Columbia 
Coll? 23), 188.- (1898). 
Potentilla fruticosa Linn., Sp. Pl. 495. (1753). 
Sentinel Butte (Bergman). 
CHAMERHODOS Bunge (yauai to the ground, pddov a 
rose). This is a poor name! How could this unsightly plant with 
its almost microscopical flowers impress upon the author’s mind 
the idea of its resemblance to a rose? 
Leeds, Butte, Towner, Dunsieth. 
572. Chamaerhodos erecta Bunge, in Ledeb. Fl. Alt. I: 
430. (1829). 
FRAGARIA Cuba, Hort. Sanit. (15th century). Brunfels, 
Herb. Viv: Ic. (J. de Manliis) 2: 173... (1531)-” lour.5 Eisaegees 
(1694), Linn. Gen. (1737 and 1754): 
573. Fragaria platypetala Rydb. Mem. Dept. Bot. Columbia 
Univ: 2:°277. (rs98). 
Devil’s Lake, Turtle Mountains. 
Pages 339-378, Vol. IV., published Mar. 13, 1916. 
