MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 87 
Siberia, North America and Greenland. Watson’s specimens agree exactly with 
the figure of P. Altiaca in Ledebour’s Illustrations, and this name is the only one 
available, as both dissecta and pinnatifida have been used for other species, and subquin- 
ata is much more recent. Specimens of this variety seen: 
British Rocky Mountains: Drummond; Macoun, No. 7333, 1890 (Kicking Horse 
Lake). 
Utah: Watson, No. 335, 1869. 
Potentilla nivea prostrata (Rottb.) Lehm. 
Potentilla prostrata Rottb, Skrift. Kjorb. Selsk. Laerd. & Vidensk. 10: 453. 1765-9. 
Potentilla nivea prostrata Lehm., Mon. 184; Stirp. Pug. 9:69; Rev. Pot. 169; Ser. in DC. Prod. 
2:572; Lange, Consp. Fl. Groenl. 9; Rosenvinge, ibid., 656; Don, Gard. Dict. 2: 550; Walp. Ann. 
2: 509. 
Stems prostrate, compressed ; flowers glomerate at the top of the stem. 
Occurs in Greenland. 
Of these varieties var. subviridis approaches P. nana, var. Altiaca, P. saximontana and var. prostrata, 
P. Hookeriana. 
69. Potentilla villosa Pall. 
Potentilla villosa Pall.; Pursh, Fl. Am. Sept. 353. 1814. 
Poir. in Lam. Ene. Meth. Suppl 4: 541; Lehm. Mon. Pot. 28 and 166; Sprengel, 
Syst. Veg. 2: 540; Seringe in DC. Prodr. 2: 573; Don, Gard. Dict. 2: 550; Dietr. Syn. 
Pl. 3: 178; Walp. Rep. 2: 34; Ann. 2: 507; Lehm. Rev. Pot. 171; Presl. Epim. Bot. 
198. 
Nutt. Gen. N; Am. Pl. 1: 310; Hat. Man. Ed. 5: 348% Ed. 6: 280: Ed. 7: 456: 
Torr. & Gray, Fl. N. Am. 1: 442; Eat. & Wr. N. Am. Bot. 372; Rydb. Bull. Torr. Bot. 
Chub 238 301: 
Cham. & Schlecht. in Linnaea, 2: 22; Bong, Veg. Ins. Sitcha, 132; Lehm. in Hook. 
Fl]. Bor. Am. 1: 194; Hook. & Arn. Bot. Beechey’s Voy. 123; Ledeb. FI. Ross. 2: 58; 
Presl. Ep. 198; Seemann, Bot. Herald, 29; Coville, Cont. U. S. Nat. Herb. 3: 339. 
Potentilla lucida Willd.; Schlecht. Mag. Ges. Naturf. Fr. Berlin, 7: 296. 1813. 
Potentilla lewcochroa Vand). in Wall. Cat. Pl. Ind. Orient. No. 1019, fide Lehmann. 
Potentilla fragiformis villosa Regel & Tiling, Fl. Ajan. 85*. 
Wats. Proc. Am. Acad. 8: 559. Macoun, Cat. Can. Pl. 140, 1883; Steinejer, 
Proc. U: S: Nat. Mus. 1885: 532. 1885. 
