108 
141. Potentilla emarginata, Pursh. 
P. nann, Rak, Exp., Armsteong, Narrat, Hooker, Coll., Rowlee & Wiegand, Cornell list; 
P. nivea, Bbown, Chlor Melv. (ex parte), Hooker, App. Parry II (ex parte). 
Distribution. Banks Land: Ballast Beach, Mercy Bay, Miertsching (KH), 
Bäring Land, M Clube (KH), Anderson (ex Armstrong, 1. c); [Mel ville Peninsula: 
Igloolik, Parry (NHM), Duckett Cove, Parry (CH), interiör, Rae (1. c), ?, J. C. 
Ross (LS)]; Baffin Land: White Strait, Tarr (ex Rowlee & Wiegand, 1. c), Cum- 
berland Gulf (KH), Cape Searle (KH), Kekerten, Kingnait, Niatolik, Taylor (P1 
Baff.), Ponds Bay, Lyall (KH), Borden (ex Macoun, App. Neptune) ; Melville 
Island, Sabine (NMH, KH), M'Clintock (KH), M'Millan (ex Macoun, App. Arctic), 
Winter Harbour, Hennessey (App. Arctic) ; EUef Ringnes Island, Isachsen (ex Sm- 
M0N8, Stray Contr.); North Kent, Simmonb (1. c); Graham and Buckingham Islands, 
ScHEi (ex Simmons, 1. c); Heiberg Island: Hyperite Point, Big Island, Schei (ex 
SiMMONS, 1. c); Ellesmereland : very common, Hart, Simmons. 
Geographic area: Northern Greenland, northern North America, Rocky 
Mountains, eastern and arctic Asia, Novaja Semlja, Franz Joseph Land, Spitzbergen. 
Probably this species is far more commonly distributed then it appears from 
the above list of localities, and I am inclined to think that it may be found in most 
places where there is any vegetation to speak of, but it is easily overlooked and 
will escape a collector who confounds it with the more showy P. Vahliana. On 
the other hand there may be some uiistake about those of Taylor's locahties from 
where I have had no specimens for inspection, as this author has not been quite 
abie to keep the Pofew^iV/a-species separated. 
maculata, Pourr. 
Distribution. Baffin Land: Cumberland Gulf, Kumlien (Plante); Ellesmereland: Discovery 
Harbour, Greely (Rep ). 
Geographic area. Greenland, arctic and temperate Europé and Asia, Labrador (?). 
As P. maculata niost probably is no american plant at all, I think it is best to exclude 
the record of Ki mi.ikn as I luue done in my Flora EUeam. with that of Greely, notwithstanding 
its appearance in Greenland. 
142. Potentilla tridentata, Soland. 
Distribution. Baffin Land: Cumberland Gulf, Niatolik, Mihkdiuak, Taylor 
(Pl. Baff.). 
Geographic area. Greenland, arctic and northern temperate America, 
especially in the eastern parts. 
Not having seen any specimens of this plant from Baffin Land, I have been 
somewhat doubtful about entering it in the list with a number, but there is, cer- 
tainly, nothing curious about its occurrence there, as it is well in accord with its 
range on the Continent and in Greenland. Moreover it can hardly be confounded 
with any other species of the species of the genus, even if a confusion wish Sib- 
baldia procumbens has sometimes taken plaee. 
