140 GEOLOGICAL SURVEY OF CANADA. 



(640.) P. fragiformis, Willd. Hook. PI. I., 194. 



In the Aleutian Islands. (JDe CandoUe.) St. Paul's Island. (^Har- 

 rington.) 



Var. villosa, Eegel. 



P. vUlosa, PaU. Hook. Fl. I., 194. 



Prom Vancouver Island to Alaska. ( Watson.) Queen Chax-lotte 

 Islands. (Bawfon.) Kotzebue Sound, Ounalashka and Sitka. (Mothr. 

 Alask.) Dundas Island, B.C. (Scoukr.) 



(641.) P. maculata, Pour. 



P. Salisburgensis, Hsenke. Torr. & Gray, Fl. I., 440. 

 P. opaca, Pursh, 355, not Linn. Hook. Fl. 1., 191. 



Labrador. {McGill Coll. Herb.) Greenland. (Hook. Arct. PI.) 



(642.) P. frigida, ViUars. 



P. minima, Gray. Manual, 1st ed., 122. 



Mackenzie Eiver eastward to Baffin's Bay, and north to Melville and 

 other Arctic 1 slands ; also Greenland. (Hook. Arct. PI.) 



(643.) P. emarginata, Pui-sh. Hook. PL I., 194. 



P. nana, "Willd. Hook. Fl. I., 194. 



P. Grosnlandica, E.Br, in Ross's Voy., 142. 



P. nirea, var. concolor, Torr. & Gray, Fl. I., 441. 



On the most elevated of the Eocky Mountains. (Drummond.) La- 

 brador. (Kohlmdster.) Kotzebue Sound, and between Point Barrow 

 and Mackenzie Eiver. (Rothr. Alask.) Greenland. (Hook. Arct. PI.) 



(644.) P. gelida, C. A. Meyer. 



P.flabelKfoKa, Hook. Torr. & Gray, Fl. I., 442. 



Summit of the Cascade Eange, near Hope, B.C. (Dawson.) Cascade 

 Mountains. (Lyall.) 



(645.) P. palustris, Scop. Marsh Five-Pinger. 



Comarum pdhstre, Linn. Pursh, 156. 



Very common in marshes and bogs from Labrador and Nova Scotia 

 to the Pacific, and north to the Arctic Sea. Sitka and Island of St. 

 Lawrence. (Bothr. Alask.) 



(646.) P. biflora, "Willd. 



Barren grounds, from Lat. 64° to the shores of the Arctic Sea. 

 (Richardson.) Kotzebue Sound and Cape Lisburne. (Rothr. Alask.) 



