MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 19 
fat. Man. Ed. 7: 456; Eat. and Wr. N. Am. Bot. 372; Watson, Proc. Am. Acad. 8 
); Rydb. Bull. Torr. Bot. ( ub, 23: 305. 
Lehm. in Hook. Fl. Bor. Am. 1 : 194; Ledebour, Fl. Ross. 2: 59; Macoun, Cat. 
Can. Pl. 140. 
Potentilla grandiflora fragiformis Ser. in DC. Prod. 2: 572. 1825. 
a. 
Or 
Or 
InLustrations: Lehm. Mon. Pot. pl. 15. Pare 31, f. 1; dissection of flower, f. 2; 
pistal, ~ 3'; stamen, /. 4; fruiting hypanthium and calyx, f. 8. 
Somewhat tufted; stems several from the caudex, more or less villous, ascending or 
erect, 1-2 dm. high, few-leaved and few-flowered with rather long erect branches. Stipules 
ovate, the lower scarious, brown and acute, the upper herbaceous and obtuse or acute ; 
leaves ternate with sessile leaflets. more or less villous, the odd leaflet larger, ovate with 
cuneate base, the lateral ones obliquely elliptic or obovate, all toothed with obtuse and 
more rounded teeth than in P. marginata. Hypanthium villous, in fruit 10-15 mm. in 
diameter; bractlets generally broadly elliptic and obtuse, equalling or often exceeding 
the ovate rather acute sepals. Petals obeordate or broadly cuneate and deeply emaregi- 
hate, about half longer than the sepals. 
Differs from P. nana in being in every respect more robust and with stems 1-2 din. 
high. It somewhat approaches P. villosa in habit, but lacks the tomentum and has 
much smaller flowers. It comes nearest the Caucasian and Siberian P. gelida Meyer, but 
differs in its hirsute pubescence. _ P. Jragiformis is mainly Siberian, but has been col- 
lected on the Aleutian and Behring Sea Islands. 
Alaska: J.M. Macoun, Nos. 34 and 44, 1891; Merriam, 1891; J. T White, 1894. 
Cape York: Grinnell’s Arctic Exped. 
62. Potentilla nana Willd. 
Potentilla nana Willd; Schlecht. Mag. Ges. Naturf. Fr. Berlin, 7: 296. 1813.* 
Lehm. Mon. 29 and 131; DC. Prod. 2: 573: Dietr. Syne Pl3 2 78s Walp. Rep. 
33; Ann. 2: 506; Lehm. Rev. Pot. 161. 
Eat. Man. Ed. 7: 456; Torr. & ¢ uray, Fl. N. Am. 1: 441: Bat. & Wr. N. Am. 
Bot. 872; Rydb. Bull. Torr. Bot. Club, 23: 305; Britt. & Brown, Ill. Fl. 2: 211. 
Lehm. in Hook. Fl. Bor. Am. 1- 194; Schlecht. Linnaea, 10: 98; Hook. & Arn. 
se Beechey’s Voy. 123 ; Seemann, Bot. Herald, 29 and 55: Dur: and, Journ. Acad. Phil. 
856: 190. 
Potentilla verna Hook. in Scoresby’s Greenl. 431; Hook. Sabine’s Vioveoi. 
Potentilla Groenlandica R. Br. in Ross’ Voye 142: 
bo 
Potentilla nivea B R. Br. in Parry’s 1st Voy. 277 (in part); Torr. & Gray, Fl. N. 
Am. 1: 441; Hook. in Parry’s 2d Voy. 15; W alp. Rep. 2: 33. 
