CATALOGUE OP CANADLVN PLANTS. 157 



(724.) M. nuda, Linn. 



if. reniformis, Lam. Pursh, 314. 

 3f. c.nrdifolia, Lam. Piirsh, 314. 



Very common in cool, damp woods or swamps, Irom Labrador, New- 

 foundland and iSTova Scotia to the Pacific and northward to the Arctic 

 Sea. One of our most widely distributed species. 



Var. (i. Torr. & Gray, Fl. I., 586. 



M. j^rostrata, Michx. Fl. I., 270. 



This form is easily known by the long runners producing terminal 

 racemes. 



(725.) M. pentandra, Hook. 



Frequent in mountain woods, from Lat. 49° northward. Moist alpine 

 woods in the Eocky Mountains. {Drummond.) Eastern base of the 

 Cascade Mountains on Skagit River, B.C. On the slopes of the Eocky 

 Mountains, Kootanie Pass, Lat. 40°. (Daicson.) In woods near Mc- 

 Leod's Lake, B.C. (Macoun.) 



(726.) M. trifida, Graham. 



Alpine rivulets, north of Smoky Eiver, on the east side of the Eocky 

 Mountains, in Lat. 56°, rare. {Drummond.) On the slopes of the 

 mountains, near their summits, at Spence's Bridge, B.C. (Macoun.) 



(727.) M. caulescens, Nutt. 



Occurs on the southern boundary of British Columbia. 



182. HEUCHERA, Linn. (ALUM-ROOT.) 



(728.) H. micrantha, Dougl. 



JSorth-west coast of America. {Scolder.') Common around Victoria, 

 Vancouver Island. {Macoun.) East of Hope Mountain, Cascade Eange ; 

 Coast Eange, near Bute Inlet ; Queen Charlotte Islands. (Dawson.) 



(729.) H. glabra, Willd. 



North-west coast of America, also Nootka. (Hooker.) Eocky Moun- 

 tains, at Providence and Portage Elvers, in Lat. 54°. (Drummond.) 

 On the Misinchinca Eiver, near the Pine Pass, Lat, 55°. (Dawson.) 

 Sitka. (Rothr. Alash.) 



