158 GEOLOGICAL SURVEY OP CANADA. 



(730.) H. cylindrica, Dougl. 



H. ovalifoKa, Nutt. Torr. & Gray, Fl. I., 581. 

 H. glabella, Torr. & Gray, Fl. I., 581. 



On the declivities of low hills, and on the steep banks of streams, on 

 the west side of the Rocky Mountains. (Douglas.) On the dry slopes 

 along the Pi-aser and Thompson Rivers from Yale to Spence's Bridge. 

 (Macoun.) 

 (731.) H. Hallii, Gray. (?) 



Slopes of the Rocky Movmtains iu the Kootanie Pass, Lat. 49°. 

 (Dawson.} Bow River Pass, 51°, 1879. (Macoun.) I refer the speci- 

 mens obtained to tliis species, but they accord best with M. glabella, 

 Nutt., which, however, Watson makes a synonym of _ff cylindrica. The 

 spike is long and the flowers are in sub-verticillate, conglomerate 

 heads. It is certainly distinct from H. cylindrica. 



(732.) H. parvifolia, Nutt. 



On dry gravel ridges west of Fort Walsh, on the top of the Cypress 

 Hills, ]Sr.W.T. (Macoun.) 



(733.) H. hispida, Pursh. 



H. Rtchardsonii, R. Br. Hook. Fl. I., 237. 



Dry banks of rivers, Lat. 54°-C4°. (Bichardson.) From the Saskat- 

 chewan west to the Rocky Mountains. (Drummond.) Western end of 

 Lake Shebandowan, Dawson Route, 1872 ; from Manitoba to the 

 Rocky Mountains, throughout the prairie and Peace River regions- 

 (Macoun.) Abundant from the Lake of the Woods, westward. (Daw. 

 son.) Echimamish River to Oxford House, near Hudson's Bay, and 

 along the IS'elson River to Hudson's Bay. (B. Bell.) 



(734.) H. Americana, Linti. 



II. cortwa, Michx. Fl. I., 171. 

 a. triscida, Pursh, 187. 



Woods near Amherstburg, Lake Erie, 1882. (Macoun.) Maiden, 

 Ont. (Maclagan.) 



183. CHRYSOSPLENIUM, Tf't. (GOLDEN SAXIFRAGE.) 



(735.) C. Americanum, Schweinitz. 

 C. oppositifoUum, Walter. Pursh, 269. 

 Ditches and spring brooks, Pictou, N.S. (McKay.) Common about 



