532 GEOLOGICAL SURVEY OF CANADA. 



204. LYTHRUM. 



(821.) L. alatum, Pursh. Low wet sand}- places at Point Ed- 

 ward, Ont. (J. M. Macoun.) In ditches along the Great AVestern 

 railway, four miles east of Windsor, Ont. (Macoun.) 



(^822.) L. Salicaria, Linn. Abundant in meadows amongst the 

 ruins of Louisbm-g, Cape Breton. (Macoun & Burgess.) Island of 

 Orleans, Q. (St. Cyr.) Longueuil, P.Q. (T. V. Maedonald.) 



206. MENTZELIA. 



Page 176. 



(825.) M. laevicaulis, Torr. & Gray. Mountain side, Spence's 

 Bridge, B.C. (Fletcher.) 



207. SICYOS. 



(827.) S. angulatUS, Linn. Point Abino, Lake Brie, Ontario. 

 (David F. Bay.) 



208. ECHINOCYSTIS. 



(828.) E. lobata, Torr. & Gray. Surely indigenous in this neigh- 

 borhood. Various places in Ontario, near Buffalo. (David F. Day.) 

 Abundant in willow and other thickets west shore of Lake Winnipeg ; 

 also along the Souris and Qu'Appelle Elvers. (J. M. Macoun.) Indi- 

 genous along river banks at London and other places in western 

 Ontario. (Burgess.) 



2IO. OPUNTIA. 



Page 178. 



(2149.) O. fragilis, Haw. Not uncommon on dry rocks, on 

 islands in the Lake of the Woods, 1884. (A. C. Lawson.) This, then, 

 must be the plant referred to by Sb" John Richardson as the " prickly 

 pear," but which has not been detected within the last half century. 

 On dry rocks, Hernando and neighbouring islands. Gulf of Georgia, 

 B.C., 1885. (Dawson.) Cadboro' Bay, Victoria, Vancouver Island, 

 (Fletcher.) 



