VALLEY OF THE ST. LAWRENCE AND GREAT LAKES. 549 



H. Americana, L. Common Alum-root. 



Indigenous. Rocky woodlands. Maiden, Ontario. (Dr. Maclagan). 



H. hispida, Pursh. 



Indigenous. Rocky ground. Western end of Lake Shebandowan, -within 

 sixty miles of Lake Superior, and consequently in the valley of that lake. 

 Westward from this point through the valleys of the Saskatchewan and Peace 

 Rivers to the Rocky Mountains (Macoun). 



MiTELLA, Tourn. Mitre-wort. Bishop's Cap. 



M. diphylla, L. 



Indigenous. Hillsides in rich woods. Vicinity of Quebec and Oem etery of 

 St. Charles (Brunet). River du Loup (Dr. Thomas). St. Valentin, Smith's 

 Falls, Kingston, Chippawa and Maiden (Maclagan). Common near Prescott 

 (Billings). Common in Central Canada (Macoun). Common in Western 

 Ontario (Logic, EUis, Saunders, Gibson). 



M,. nuda, L. 



Indigenous. Cedar swamps and moist woods in moss. Very common 

 throughout Ontario and Quebec. New Brunswick (Mathews). River Rouge 

 (D'Urban). Hillsides, Fortean Bay, Labrador (Butler). Manitoulin Islands 

 (Dr. Bell). From Lake Superior, through the valleys of the Saskatchewan and 

 Peace Rivers, to Quesnelle on the Fraser, in Upper British Columbia (Macoun). 



TiARELLA, L. False Mitre-wort. 

 T. cordifolia, L. 



Indigenous. Rich rocky woods. Very common throughout Ontario and 

 Quebec. New Brunswick (Dr. Fowler). 



Chrysosplenium, Tourn. Golden Saxifrage. 



C. Americanum, Scliwein. 



Indigenous. Cold wet places. Common throughout Ontario and Quebec. 

 New Brunswick (Dr. Fowler). 



ORASSULACEzE. 



Penthorum, G-ronov. Ditch Stone-crop. 



P. sedoides, L. 



Indigenous. Open wet places. Lotbini^re, Quebec (Brunet). River du 

 Loup (Dr. Thomas). Ever3rwhere (Maclagan). Common in Ontario, Hamilton, 

 London, Owen Sound, Goderich, &c. 



Sedum, Tourn. Stone-crop. 

 S. acre, L. Mossy Stone-crop. 



Introduced from Europe. Escaped to rocky banks and roadsides. Vicinity 



of Prescott and Brockville (BiUings). New Brunswick (Dr. Fowler). On face 



of a rocky hill at Picton Harbour, Prince Edward County (Macoun). Niagara 

 Falls (G. W. Clinton). 



