VALLEY OF THE ST. LAWRENCE AN1> GREAT LAKES. 163 



CocHLEARiA, Toum. Scurvy Grass. 



C. officinalis, L. Officinal Scurvy Grass. 



Indigenous. Rocks. Southern coast of Labrador (Brunet). Arctic America 

 (Hooker). Silicles globose-ovate, half as long as the pedicels ; radical leaves 

 petioled, cordate, cauline ones ovate, toothed or angled. 



C. tridactylites, DO. 



Indigenous. Eocks. Ledges of rock. Labrador and Cape Charles (Brunet). 

 Labrador (Hei'b. Banks). Silicles globose-ovate ; cauline leaves with a single 

 tooth on each side, as if 3-lobed. 



Alyssum calycinuni. 



Brock's Monument, Ontario (Judge Clinton). 



Yesicaria, Lam. Bladder Pod. 

 V. arctica, Richardson. Northern Bladder Pod. 



Indigenous. Rocks. Canescent, with a stellate pubescence ; stem 5' — 8' 

 high, simple or somewhat branched above ; radical leaves spatulate, crowded, 

 entire, or with a single notch on each side, obtuse ; cauline ones few, linear ; 

 style slender, about half the length of the globose silicle ; silicles glabrous, or 

 minutely pubescent. Seeds 4 — 6 in each cell, roundish, without a margin. 

 Island of Anticosti (Mr. Shcphard, Torr. & Gray). Plains of North Saskat- 

 chewan River (Bourgeau). West of the Assiuaboiue River (Macoun). In the 

 latter locality was found the variety (a) of Torrey & Crray, "silicles minutely 

 pubescent." 



Camelina, Krautz. False Fh^x. 



C sativa, Krautz. False Flax. 



Introduced from Europe. In cultivated fields. In a field at Lotbini^re 

 (Hrunet). New Brunswick (Dr. Fowler). Vicinity of Prescott (Billings). 

 Fields, in the vicinity of Belleville ; fields near Collingwood and Owen Sound, 

 Out. (Macoun). Cayuga, Ont. (Maclagan). Paris, Ont. (Buchan). 



Caps ELLA, Vent. Shepherd's Purse. 



C Bursa-pastoris, Moench. Shepherd's Purse. 



Introduced and naturalized from Europe. Waste place. Everywhere abun- 

 dant from the mouth of St. Lawrence, through Quebec and Ontario, westward 

 to the Pacific Ocean. Through the summer. 



Thlaspi, Tourn. Penny Ci-ess. 



T. arvense, L. Field Penny Cress, or Mithridate Mustard. 



Naturalized from Europe. Waste places and cultivated fields. Anticosti 

 Island, Salmon Rivei-, vicinity of Quebec (Brunet). Nicolet and Montreal 

 (Maclagan). Riviere du Loup (Dr. Thomas). Streets of Prescott and Toronto 

 (Macoun). Plains of the Saskatchewan (Bourgeau). Between Fort Garry and 

 Winipeg (Macoun). June, July. 



T. alpestre, L. 



Probably introduced. Vicinity of Quebec (Prova.ucher). 



