CATALOGUE OF CANADIAN PLANTS. 519 



171. POTERIUM. 



Page 143. 



(656.) P. Canadense, Benth. & Hook. Topsail, Newfoundland. 

 (R. Bell.') Common on the dry sloping flats along the coast of Labra- 

 dor. ( W. E. Stearns.') Abundant on grassy places, Salt Lake, Anticosti. 

 (Macoun.) Beauport, near Quebec. (St. Cyr.) 



(658.) P. Sitchense, Watson. Lake Lindeman source of the 

 Youcon Eiver, Lat. 62, 45'. (Schwatka.) 



(2133.) P. SANGDISORBA, Linn. Well established at Point Abino, 

 Lake Erie, Ont. (David F. Day.) 



(2134.) P. annuum, Nutt. Hook. Fl, 1., 198. 



Sanguisorba annua, Torr. & Gray, Fl. L, 429. 

 At lake near Victoria, Vancouver Island. (Fletcher.) 



172. ROSA. 



Serano Watson, Esq., the able curator of Dr. Gray's Herbariums at 

 Harvard, Mass., has lately published a " History and Revision of the 

 Roses of North America," and this necessitates additional notes and 

 corrections iu our notice of this genus in Part I. 



(660.) R. Carolina, Linn. This species and the next have fre- 

 quently been confounded, but they are easily separated by their leaves, 

 and stipules, this species having " leaflets finely many toothed," while 

 in the next they are " coarsely toothed." None of our eastern speci- 

 mens are of this species, but all belong to the next. We have it only 

 from Ontario, and Mr. Watson quotes it from Nova Scotia and New 

 Brunswick on my authority, which he clearly shows to be incorrect. 

 Meech's Lake, near Chelsea, Q. (Ami.) 



(661.) R. lucida, Ehrh. Newfoundland. (Osborn.) Whycocog- 

 mah, Cape Breton, and at numerous places in Nova Scotia. (Macoun 

 & Burgess.) Border of Gogoggan Lake, Guysboro' Co., Nova Scotia. 

 (Faribault.) Quite common at St. Stephen, N.B. (Vroom.) Whiskey 

 Island, Georgian Bay. (J. Bell.) 



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(662:) R. blanda, Ait. On rocks and rocky shores of rivers and 

 lakes from Newfoundland to Hudson Bay, and west to Lake Winnipeg. 

 (Watson.) Glenleg, Guysboro' Co., N.S. (Faribault^) Petitcodiac, 



