IOWA ACADEMY OF SCIENCE 
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abniidaiit also in the wheat growing sections of the country north and 
south, though generally closely associated with wheat it is not always so. 
In the Great Basion of Utah it is frequently found in dry places on 
banks in the Cache Valley in Utah. The Corn Cockle {Agrostemma 
Gitliago) has a similar distribution. The Bouncing Betty abundant about 
St. Paul and Minneapolis, and northeastern Iowa and is widely scattered 
but never abundant in other sections of the state, in British Columbia, 
especially near Victoria, Vancouver, North Bend and in western Wash- 
ington it is abundant. The Night-flowering Catchfly {Silene noctifiora) 
which has been a weed of gardens for thirty years in the state of Wis- 
consin, has become widely diffused in Illinois and Missouri and other 
clover growing states of the west because of the large importation of 
clover seed from Europe and the eastern states where the weed is com- 
mon. It was not observed in Manitoba or elsewhere in western Canada. 
The Catchfly {Silene clicJwtoma) related to the Night-flowering Catchfly, 
has become common in clover flelds from New England to Iowa and Texas. 
The Eagged Eobin {Lychnis Flos-cuculi) and the White Catchfly (L. 
alha) occur under similar situations but less frequently. The Cerastiiim 
viilgatum is common in pastures in some parts of Iowa and on the Pacific 
coast, Victoria, Vancouver, and Seattle, Washington. The Nodding 
Chickweed {Cerastium nutans) is common in fields in IMissouri, Illinois 
and southern Iowa. The common Chickweed {Stellaria media) on the 
other hand is a common garden and lawn weed from Minnesota, Emerson, 
AVinnipeg, Winnipeg Beach, Manitoba, on the west slope as Sicamous, 
A^ancouver, and Victoria and in the state of AVashington, Seattle and 
Everett, and a common weed in the northern Mississippi Valley to the 
Atlantic coast and in the Eocky Mountains. It is now spreading rapidly 
in shaded lawns in many parts of Iowa. 
The common Purslane or Pusley {Fortulaca oleracea) has been more 
weedy in New England since the beginning of the eighteenth century. 
It has been a common weed in the Mississippi Valley since the early 
agricultural settlements. Now is common in gardens and cultivated 
flelds. It is also common in the Eocky Mountains country and on the 
Pacific coast and the Gulf states. 
The Pigweeds so common and weedy in the northern Mississippi Valley 
states are not abundant in the northwest. The common Pigweed {Amar- 
antus retroflexus) was common in St. Vincent, Minnesota, Emerson, 
Manitoba, but was rare in Winnipeg, more common on the west slope of 
the Eockies, Kamloops, Victoria and Vancouver. The Amarantus graec- 
izans, the common Tumbleweed of Iowa, is not common in Manitoba and 
