44 
The foreign species of the New Jersey list are classified as 
given below: 
Worst. Bad Indifferent. Total 
Annuals 21 33 15 
Biennials 5 10 5 
Perennials 10 19 12 
Total 36 62 32 13 
It will be seen that there are forty-three more weeds in the 
New Jersey than in the Iowa list. The increase is mostly among_ 
the worse and bad sorts. It will also be observed that half of 
the New Jersey weeds are foreigners, while for Iowa only much 
less than one-third. : 
Turning now to the natives, the Iowa list gives two hundred 
and ten (210) distributed as follows : 7 
Indifferent. Total. 
Worst. Bad. 
Annuals 10 16 14 
Biennials 3 6 6 
Perennials 10 35 110 
Total 23 me, 130 
In contrast with this stands the New Jersey list: 
Worst. Bad. Indifferent. Total. 
Annuals 9 II 16 
Biennials 2 5 6 
Perennials 8 20 58 : 
Total 19 36 80 1355 
There are fifty less of the indifferents, and nearly all of thes : 
are among the perennials. ie 
These general summarized facts are not so easy to grasp as 
particular cases, and therefore we will glance at some of the 
species. Those of the Iowa list not found in New Jersey ate 
mostly of the third class weeds, native in large part to the pr airie, 
and as a rule quickly disappear when the land is placed under 
cultivation. Such for example are the lead plant (Amorpha 
canescens), milk vetch (Astragalus Canadensis), false indigo 
(Laptista leucophea) and button-snake root (Eryngium yuccafr 
