1890. J 
159 
[Upham. 
1885 reported by Macoun as already introduced along the whole 
line of the Canadian Pacific Railway from W innipeg to the Colum- 
bia river. 
Silene nocti flora, L. {Night- flowering Catchfly), a frequent weed in 
fields and gardens, both in Minnesota and Manitoba. 
Lychnis Githago , Lam. ( Corn-Cockle ), plentiful and very trouble- 
some in wheat-fields. 
Stellaria media, Smith {Chickweed) , common throughout in gar- 
dens and fields. 
Cerastium viscosum , L. {Mouse-ear Chickweed ), becoming fre- 
quent in cultivated land, especially in gardens. 
Cerastium vulgatum , L. {Larger Mouse-ear Chickweed), common 
or frequent in same situations as the last two ; apparently indige- 
nous in Ontario and eastward, being often common there in wood- 
lands. 
1'ortulaca oleracea , L. {Purslane), generally an abundant weed 
in market gardens and other highly cultivated land ; plentiful in 
Indian corn-fields at the O jib way village, Red lake, Minnesota; 
abundant on railway enbankments at Tintah, Minn., and Denbigh, 
North Dakota; but in 1887 not yet common in the Red river valley 
north of Fargo, nor in Manitoba. 
Malva rotundifolia , L. {Common Mallow), common or frequent 
in Minnesota, extending northwestward to Todd county, »ear the 
southeastern border of the Red river basin ; but not observed in 
Manitoba nor North Dakota. 
Oxalis corniculata, L., var. stricta, Sav. (Yellow Wood-Sorrel), 
occasionally found in great abundance, forming a matted growth, 
in wheat-fields in the northeast part of North Dakota, and fre- 
quently seen there springing up through the sods of newly broken 
ground. 
Melilotus alba, Lam. ( White Melilot, Sweet Clover), becoming fre- 
quent, especially southward ; spreading abundantly along the road- 
sides in some parts of Cottonwood county, Minnesota. 
Geuin album, Gmelin (White Avens), frequent southward by 
roadsides. 
Potentilla Norvegica, L., common in waste places and in culti- 
vated ground. 
Potentilla Anserina, L. (Silver- Weed), occasionally a plentiful 
weed beside roads and railways and in moist fallow fields, in North 
