CATALOGUE OF CANADIAN PLANTS. 24? 



295. BIDENS, Linn. (BUR-MARIGOLD.) 



(1155.) B. frondosa, Linn. Common Beggar- ticks. 

 B. pilosa, Wiild. Holmes Herb. McGill College. 



Common in ditches and on moist, fertile soil, from Nova Scotia and 

 New Brunswick to the Saskatchewan. (Richardson.) 



(1156.) B. connata, Muhl. Swamp Beggar-ticks. 



Swampy grounds and margins of rivers and ponds, from Nova Scotia 

 and New Brunswick throughout Quebec and Ontario to the Saskatche- 

 wan, at Cumberland House. (Richardson.) 



(1157.) B. cernua, Linn. Smaller Bur-marigold. 



Swamps and ditches, from Nova Scotia and New Brunswick through- 

 out Quebec and Ontario westward to the Saskatchewan and northward 

 to Hudson Bay. (Richardson.) Very abundant in marshes on the 

 upper part of Swan Eiver and westward in the valleys of rivers to the 

 Eocky Mountains. (Macoun.) 



Var. elata, Torr. & Gray PI. II., 352. 

 B. chrysanthemoides, Hook. Fl. I., 314. 

 Straits of De Fuca, on the North-West coast. (Scouler.) 



(1158.) B. chrysanthemoides, Michx. Greater Bur-marigold. 



Swamps and margins of shallow pools and in ditches. This species 

 is credited with the same range a the last in all the eastern part of 

 Canada, but is not recorded west of the Lake of the Woods. My im- 

 pression is that this is a more southern species than B. cernua, and 

 that the variety with four awns on the achenia should be placed with 

 B. cernua. All our western forms seem to be B. cernua, and it is prob- 

 able that our northern ones also are that species. 



(1159.) B. Beckii, Torr. 



In still water in rivers and lakes. In the St. Lawrence near Point 

 St. Charles, at Montreal. (Holmes.) Beauharnois Co., Q. (McGill 

 Coll. Herb.) Vicinity of Ottawa. (Fletcher Fl. Ott.) Eailway Bay 

 near Prescott, also Doxey's Bay, Eideau River, four miles from Ottawa, 

 abundant. (Billings.) Eiver Trent above Heely Falls; BayofQuinte, 

 above Flint's Mill, Belleville ; also, Sydenham Eiver above the 

 falls, near Owen Sound, Ont. (Macoun.) Niagara Eiver above the 

 falls. (David F. Day.) Chippewa and Maiden, Ont. (Maclagan.) 



