IOWA ACADEMY OP SCIENCE 
45 
Dead Nettle {Lamium alhiim) is, weedy. In Missouri and Illinois and 
eastward the L. amplexicaule is an early spring weed. The Hemp Nettle 
{Gaieopsis TetraJiit) is common in British Columbia near Sicamous Junc- 
tion. 
There are but few weedy plants of the family Leguminosae. The Wild 
Licorice {Ghjcyrrliiza lepidota) is common everywhere on the prairies 
of Minnesota to Winnipeg west to the provinces of Saskatchewan and 
Alberta, but less frequent on the west slope, abundant in the Rockies to 
the great basin. The two species of Sweet Clover {Melilotiis aVba and M. 
officinalis) are common in parts of Minnesota and on the west coast. 
The former occurs near Winnipeg but is rare in the provinces to the 
west, east of the Rockies in Canada. Though both species are common 
in the Rockies south of the boundary, West to Utah, Idaho, and Wash- 
ington. The Conunon Vetch {Yicia saliva) is common in the grain fields 
of northern Iowa, Wisconsin, and Minnesota, less frequent in the grain 
fields of Alberta. 
The common Plantain {Plant ago major and P. Rugelii) of the Plan- 
tain Family {Plant aginaceae) are common everywhere in the Northern 
Mississippi Valley, in Manitoba but less frequent westward. Common 
on the coast. It is likewise common in AVashington. The Buckhorn 
{Plantago lanceolata) which has been widely distributed m recent years 
with clover seed in Iowa, occurs throughout the northern Mississippi 
Valley states and was observed in LaCrosse in 1897. It was not observed 
in the Northwest provinces, probably largely because clover is not a 
common crop and the seed is generally distributed with clover seed. It 
does, however, occur on the Pacific coast, Vancouver, British Columbia, 
AVashington and Oregon. The Dooryard Knotweed {Polygonum avi- 
ciilare) of the Polygonaceae is the most widely distributed of the genus, 
common throughout the northwest from Minnesota to the Rockies soutlr 
to Colorado and west to Utah to the Pacific Northwest. It is common 
also in Manitoba from AVinnipeg and AVinnipeg Beach to the coast. The 
plants are much more robust than the plant of Iowa. The AVild Buck- 
wheat (P. Convolvulus) commonly found in grain fields of the northern 
states is as yet not common in the Canadian provinces. The SmarUveed 
(P. Persicaria) a roadside weed of the northern states is less frequent 
in the Canadian provinces although occurring as far north as Winnipeg 
Beach and Emerson and common everywhere from the great basin to the 
Atlantic coast. The Prince’s Feather or Smartweed (P. pennsylvan- 
icum) is a common plant in Iowa and Minnesota corn fields but it is a 
Tare plant near the boundary. 
