1900. No. 8. VASCULAR PLANTS COLLECTED IN ARCTIC NORTH AMERICA. IQ 
The expedition has brought home a fairly good material of this beauti- 
full species of Potentilla. A pointed out by Simmons (Sec. Arct. Exped. 
Fram, 1898— 1902, No. 2, 1906, p. 55) it forms large, densely-packed tufts. 
42. Potentilla rubricaulis LEHMANN, Nov. et minus cogni. Stirp. Pu- 
gillus II, Hamburg, 1830, p. 11; Revisio Potent., Bonn 1856, p. 68, tab. 30; 
H. G. Srumons, Sec. Arct. Exped. Fram, 1898—1902, No. 2, 1906, p. 50, 
tab. 5; TH. Worr, Monogr. d. Gatt. Potentella, 1908, p. 170; RYDBERG, 
North Am. Flora, vol. 22, 4, 1908, p. 337; non RYDpBERG, Monograph 
N. Am. Potentillæ, 1898, p. 101. 
In full bloom in the beginning of August (3rd—5th) 1905. 
For this interesting species the reader may refer to H. G. Simmons's 
detailed account. I do not find it necessary to give varietal rank (var. 
arctica SIMMONS, l. c., p. 51) to the arctic specimens of it. 
Dryas L. 
43. Dryas integrifolia M. VaHL, Skrifter udg. af Naturhist. Selsk. i 
Kjøbenhavn, vol. 4, 1798, p. 171; H. G. Smmmons, Sec. Arct. Exped. 
Fram, 1898—1902, No. 2, 1906, pp. 43—46; Hooker, Fl. Bor. Am. I, 
1834, p. 174; D. octopetala, var. integrifolia CHAMISSO & SCHLECHTENDAL, 
Linnaea, II, 1827, p. 3; Macoun, Catalogue I, 1883, p. 132. 
Rar, Wollaston-Victoria Land. — Watker, Boothia Felix. 
Flowering in July (7th—31st 1904), and with old fruits from the fore- 
going year. 
I am of the same opinion as H. G. Smmons (I. c.) in maintaining 
that D. integrifolia M. VAHL must stand as a species, in spite of tran- 
sitions to D. octopetala L. having been found at places where the two 
species meet. 
The rather rich material from King William Land — collected on 
several occasions both in 1904 and 1905 — shows no specimens verging 
into D. octopetala, but varies in many other respects, e. g. outline of the 
leaf-blades, etc. 
Papilionaceae. 
Oxytropis D.C. 
44. Oxytropis arctobia BunGE, Mém. Acad. Sc. St. Pétersbourg, VIII 
ser., tome XXII, No. 1, 1874, p. 114; O. arctica, 8, minor HOOKER, Fl. 
Bor. Am., I, 1834, p. 146; O. arctica, B, uniflora Hooker in App. to 
Parry's 2nd Voy., 1825, p. 396; O. migrescens, var. arctobia Å. GRAY, 
