00 GEOLOGICAL SURVEY OF CANADA. 



XII. CISTACE^B. EOCK-ROSE FAMILY. 



71. HELIANTHEMUM, Tourn. (ROCK-ROSE.) 

 (219.) H. Canadense, Michx. Fl. I., 308. Frost-weed. 



H. ramvttflorum, Michx. Fl. I., 307. 

 H. rosmarinifolium, Pursh, 304. 

 H. corymbosum, Pursh 303. 



Dry,, sandy, or gravelly soil, east of Belleville; very common on 

 Eice Lake plains ; St. James' Cemetery, Toronto ; vicinity of London. 

 Ont. ; Pointe-aux-Pins, Lake Superior ; Fort Francis, Eainy Eiver. 

 (Macoun.) Gait, Ont. (.Mas Crooks.') Sandwich, Ont. (Maclagan.) 

 S^ndy plains of the Eiviere aux Sables, Lambton Co., Ont. (Gibson.) 

 Plains of the Saskatchewan. (Bourgeau.) Last reference doubtful. 



72. HUDSONIA, Linn. (HUDSONlA.) 



(220.) H. tomentosa, Nutt. Downy Hudsoniana, 

 H. ericoides, Richards, in Frankl. Journ.. 11. 



Sandy shores of lakes and rivers. Northwest Arm near Halifax, N.S. 

 (Sommers.) Abundant on Kouchibouguac beach, N.B. (Fowler's Cat.) 

 Anticosti and St. Laurent, Q. (Brunei.} Port Colborne, Lake Erie. 

 (McCrill Coll. Herb.) Pointe-aux-Pins, Montreal and Sandy Islands, 

 Lake Superior; Fifteen-Mile Point, Eainy Lake, and Hungry Hall, 

 entrance to the Lake of the Woods ; sand hills west of Fort Pitt, 

 N. W. T. (Macoun.) From Lake Huron to as far north as Slave Lake, 

 in several places. (RicJiardson.) 



(221.) H. ericoides, Linn, 

 McNab's Island, Halifax, N.S. (Sommers.) 



73. LECHEA, Linn. (PINWEED.) 



(222.) L. major, Michx. Greater Pinweed. 

 L. villosa, Ell. Hook. Fl. I., 72. 



Dry woods in sterile soil. Sandy woods a mile south of Port Dover 

 Junction, Canada Southern Eailway, Ont. (Macoun.) Near London, 

 Ont. (Burgess.) 



