INTRODUCED PLANTS OF AMERICA. 



311 



Sonchus ohraceus, a weed in the garden at Fort Nisqually. 

 Poa annua, observed, both at Fort Nisqually, and at some of the posts 

 in the Interior. 



Triticum sativum, wheat, hardly succeeds at Fort Nisqually ; but it 

 was said to be cultivated to some extent, on the Willamette and 

 Cowalitz. Three or four varieties, were seen at Fort Colville ; 

 whence they had been transferred to the Kooskoosky station. 



Hordeum vulgare, barley ; together with 



Avena sativa, oats ; and 



Secale cereale, rye; were observed by Mr. Brackenridge, under culti- 

 vation at Fort Vancouver. 



Pyrus mains, the apple, was said to produce abundantly at Fort Van- 

 couver. But fruit-trees, could hardly be cultivated at Fort Colville ; 

 on account of the ravages of the small marmot. 



Pyrus communis, the pear. The tree, was seen by Mr. Brackenridge, 

 under cultivation in the garden at Fort Vancouver; together with 



Vitis vinifera, the European grape ; 



Amygdalus Persica, the peach , 



Armeniaca vulgaris, the apricot ; 



Primus domestica, the European plum; 



Primus cerasus, the European, or the common garden cherry ; 

 Fragaria, several imported varieties of the strawberry ; 

 Ribes rubrum, the garden currant; 



Rihes grossularia, the European, or the common garden gooseberry ; 



Cucumis sativus, the common cucumber ; 



Cucumis melo, the musk melon ; 



Cucurbita ynelopepo, the squash ; 



Pisum sativum, the garden pea ; 



Phaseolus, the common kidney bean ; 



Solanum melongena, the egg-plant, or aubergine ; together with 

 Beta vulgaris, the beet ; 

 Apium djidce, the celery ; 

 Petroselinum sativum, the parsley ; 



Allium cepa, the onion ; and all the other common garden vegetables. 



At the Kooskoosky mission station, irrigation is necessary to agri- 

 culture. And in all probability, the seeds of some of the plants which 

 were seen cultivated and naturalized, had been derived from the 

 United States. The following, is by no means a complete list: 

 Zea mays, Indian corn, which has always failed in the vicinity of the 



