NATURAL HISTOKY, TOKOJSTTO BEGION 



LATJEACEAE (Laurel Family). 



Sassafras variifolium, Ktze. At its northern limit 



here. 

 Benzoin aestivale, Nees. (Wild Allspice). Especially 



in Niagara district. 



PAPAVERACEAE (Poppy Family). 



Chelidonium majus, L. (Celandine). 



Sanguinaria canadense, L. (Bloodroot). Common 



up the Don. 

 Argemone mexicana, L. (Mexican Prickly Poppy). 



FUMAEIACEAE (Fumitory Family). 



Adlumia fungosa, Greene (Climbing Fumitory). 

 Dicentra canadensis, Walp. (Squirrel Corn). 



" cucullaria, Bernh. (Dutchman's Breeches.) 



CBTTCIFEBAE (Mustard Family). 



Thlaspi arvense, L. (Penny Cress). 



Lepidium sativum, L. (Garden Cress). Introduced. 



" virginicum, L. (Wild Peppergrass). 

 Coronopus procumbens, Gilibert. (Swine Cress). 

 Capsella bursa-pastoris, Medic. (Shepherd's Purse) 

 Camelina sativa, Crantz. (False Flax). 

 Cakile edentula, Hook. (American Sea Kocket). 

 Brassica arvensis, Ktze. (Charlock). 

 Conringia orientalis, Dimort. 

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