46 
for Iowa by omitting seventy-five (75) of the native prairie plants, | 
mostly perennials, and adding forty-three (43), a large percentageof : 
which are annuals. The only single weed of the first rank stricken i 
from the Iowa list in adapting it for New Jersey is a species of . 
pigweed, but even this within the last year has been found within 
the latter State. On the other hand there are several first class | 
weeds that are added in the adoption of the western list to the 
east. Of such, for example are: a pepper grass, the wild radish, — 
two kinds of cocklebur, feverfew, wild onion, wild leek, nut-grass | 
Bermuda grass, and a kind of chess, or a total of ten of the worst : 
weeds. “ 
That which is true of New Jersey and Iowa likewise holds a 
good for the whole East compared with the whole West. The — 
East is overrun with a larger number of the most aggressive : 
weeds ; weeds that assert their ability to resist the forces of the - 
cultivator and plant their banners upon the tilled ground, like- 
wise annual weeds that stock the soil with a multitude of seeds, — 
ready to spring into life whenever an opportunity offers. : 
Some species of weeds are found everywhere from Maine to 
California, as Chenopodium album, Amarantus retroflexus, Xam 
thium Canadense, Plantago lanceolata, Capsella Bursa- pastoris 
and Portulaca oleracea. There are others prominent on th 
Pacific Coast and not elsewhere, as the Hordeum murinum 
Silybum Marianum, and Malva borealis. Likewise there at 
weeds peculiar to the Rocky Mountain region, as the /va axillaris 
Franseria tomentosa, while on the prairies, especially in Kansas — 
and Nebraska, the following head the list: Cenchrus tribuloides, — 
Asclepias Syriaca, Solanum rostratum and Helianthus annuus. 
the middle prairie States it is mostly the members of the suf : 
flower family, as the ragweeds and cockleburs, that prevail. 
Coming into the central States the list is led by Canada thistle, — 
quackgrass, docks, daisy, chess, plantain, and purslane. If Oe 
this list we add wild carrot, onion and parsnip, and the like old 
foreign enemies, we have the extensive catalogue of these plants — 
pests that prey upon the lands of New England. q 
Of the weeds of the South as compared with those of the : 
North it has not been the purpose here to speak, nor of the mi- 
gration of weeds. 
