CATALOGUE OF CANADIAN PLANTS. "79 



Var. rigida, Bngelm.; Gray, Man. Ed. V., 394. 

 S. rigida, Pursh, Fl. II., 397; Hook., Fl. II., 397. 



Appai-ontly the deep water form of the Great Lakes. West Lake 

 and Consecon Lake, Prince Edward Co., Ont. (Macoun.) Wet sandy 

 shore at Belleville, Ont. (Burgess.) 



(2421.) S. graminea, Michx., El. II., 190; Pursh, El. IL, 397. 

 S. sagittifolia, var. 4, simplex, Hook., Fl. II., 167, in part. 

 This seems to be a northern and eastern species. Newfoundland. 

 {Miss Brenton.) Small lake near North Sydney, Cape Breton Island. 

 {Macoun.) In wate;' at Eothesay, and in a small lake near Eichibucto'; 

 Grand Lake, and Upper St. John, and Clifton, N.B. (Fowler, Oat.) 

 Gull Eiver, Victoria Co., Ont. (Macoun.) Wet sandy shore of Lake 

 Joseph, Port Cockburn, Muskoka Co., Ont. (Burgess.) 



651. ECHINODORUS, Richard. 



(2422.) E. parvulus, Engelm.; Gray, Man. Ed. V., 492. 

 E. mihvlatua, Engelm. (?) Agassiz, Lake Superior, 176. 

 North shore of Lake Superior. (Agassiz.) We know nothing of 

 this species and enter it on the authority of Agassiz. 



652. DAMASONIUM, Juss. Gen. 46. 



(2423.) D. Californicum, Torrey, Pacif. E. Eep. IV., 142. 



This species, or the one taken for it was growing in abundance in 

 Somas Eiver, at the head of the Alberni Canal, on the west coast of 

 Vancouver Island. The large white flowers were especially attractive 

 and caused me to stop in midstream and pull in shore to gather the 

 plant. Owing to the great heat of the day these became so shrivelled 

 in a short time as to be worthless for specimens, and were thrown 

 away. Only one immature specimen was brought away, August 13th, 

 1881. (Macoun.) 



CXV. NAIADACBtE. Pond-weed Family. 



653. TRICL.OCHIN, Linn. Gen. 453. (ARROW-GRASS.) 



(2424.) T. palustre, Linn. ; Hook., Fl. IL, 168; Pursh, Fl. 11,247. 

 Not uncommon in wet sand along lakes and by ponds. Labrador. 



