NINTH ANNUAL YEAR BOOK— PART V 197 
eyed Susan, Sheep Sorrel, Buckhorn, Canadian Blue Grass, Wild Parsnip, 
Wild Buckwheat, Old Witch Grass, Bractcd Plantain, Wild Rose, Smooth 
Crab Grass, Pennsylvania Smartweed, Lady's Thumb, Smartweed (Poly- 
gonum lapathifolium) , Sprouting Crab Grass, Yellow Sorrel, Marsh Cress 
(Nasturtium palustre). Horse Mint, Mexican Dropseed Grass, Wild Timo- 
thy, or Dropseed Grass, Black Medick, Yellow Sweet Clover, Diffuse Drop- 
seed Grass, Prickly Lettuce, Small Peppergrass, Shoo-fly, Artichoke, Vel- 
vet Weed, Wild Morning Glory, and Milkweed. 
Yelvet Weed. 
This weed was more frequently reported outside of the list than any 
of the other weeds. It is abundant in many fields and along roadsides. 
It has occasioned much alarm because of the seeming difficulty of exter- 
minating it, the seeds retain their vitality for so long a period in the 
soil. 
Morning Glory. 
This weed is generally reported from many parts of the state in fields 
and along highways. 
Russian Thistle. 
This weed w^as mentioned a number of times as a troublesome weed 
but not as much alarm is felt for this weed as many others. 
Greater Ragweed. 
Greater Ragweed was reported quite frequently and certainly is com- 
mon, especially as a roadside weed in all parts of the state, it being one 
of the most conspicuous roadside weeds of the state. 
Smaller Ragweed. 
This weed was common everywhere in the state, not only along road- 
sides but in the fields, but less requently reported than the Greater Rag- 
weed. 
Bull Thistle. 
Commonly reported from many different sections of the state, especi- 
ally pastures. This weed is certainly more common and abundant than 
the Canada Thistle and because of its abundance perhaps does more 
injury. 
Shoe-String or Muhlenherg Smartweed. 
Widely scattered in many different sections of the state and frequently 
reported as a troublesome persistent perennial weed, especially in low 
grounds. 
Dropseed Grass. 
The Dropseed Grasses were not on the list. This grass has been sent 
to me by hundreds during the last two seasons, largely because it was 
thought to be Quack Grass. The Dropseed Grasses are abundant and are 
widely distributed throughout the state. 
Your chairman has requested me to give particular attention to some 
of the methods of extermination of weeds. One of the most potent factors 
in the spread of weeds in the state is the carelessness on the part of 
owners with reference to the destruction of weeds. No other system has 
