96 GEOLOGICAL SUKVEY OP CANADA. 



Common in marshy places, Preseott, Ont. (Billings.) Kemptville, 

 Ont. (Porter.) Abundant in marshy meadows and lake margins 

 throughout central Ontario. (Both forms.) (Maeoun.) Vicinity of 

 Hamilton, Ont. (Buchan.) Swamps at London, Ont. (Burgess. 

 Millman.) Parry Sound, Georgian Bay. (Burgess.) North shore of 

 Lake Superior. (Agassiz.) Batch-ah-wah-nah Bay, Lake Superior ; 

 Michipicotin to Lake Missinaibi, Ont. ; down the Nelson Eiver to 

 York Factory. (R. Bell.) Moose Factory, James Bay. (Cottar & 

 Dr. Hayden.) Fort George, James Bay. (J. M. Maeoun.) Syden- 

 ham Eiver, Owen Sound, Ont. ; abundant around Lake Superior 

 and up the Nipigon River to Livingstone Point, on Lake Nipigon, 

 (Maeoun.) "Wet prairie at Emerson, Man ; Souris Eiver, 49th parallel ; 

 and Kitaman Eiver, Kootanie Yalley, Eocky Mountains. (Dawson.) 

 Eather common in wet spots on the prairie from Winnipeg westward, 

 especially at the File Hills and Long Lake; not uncommon in the 

 Eocky and Selkirk Mountains, and westward to the Pacific coast and 

 Vancouver Island, where it is abundant. (Maeoun.) Throughout 

 Canada to Bear Lake, and from Hudson Bay to the Pacific Ocean ; 

 varying much in size, from four inches to two feet. (Hooker, Fl.) 

 Greenland. (Lange.) 



Var. calva, Torr. Bot. N. York, II., 346. 

 Blackwater Eiver, Lake Nipigon, Ont. (Maeoun.) 



Var. glaucescens, Gray, Man. Ed. V., 558. 



In marshes at the mouth of Nipigon Eiver, Lake Superior. (Maeoun.) 



(2469.) H. compressa, Sullivant; Gray, Man. Ed. V., 558. 



This species seems to be rare in Canada. In wet meadows at Belle- 

 ville, Ont. ; in great profusion, and evidently indigenous. (Maeoun.) 

 Barren field north of Fort "Wellington, Preseott, Ont. (Billings.) Port 

 Colborne, Lake Erie. (MeGill Coll. Serb.) 



(2470.) H. rostellata, Torr., Var. occidentalis, "Watson. Bot. 

 Calif. II., 222. 



Sdrpus rostellaius, Torr. Cyp., 318. 

 Abundant in marshes of the Somas Eiver, at Alberni, west coast of 

 Vancouver Island. The culms are usually rather weak, and often root 

 at the tips, forming new plants which soon equal the parent in size. 

 (Maeoun.) 



(2471.) H. intermedia, Schultes.; Torr. Cyp., 91. 



Not uncommon in marshy spots along the Bay of Quinte, both above 

 and below Belleville, Ont. (Maeoun.) 



