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Iowa
Illinois
Indiana
Kansas
Kentucky
Minnesota
Michigan
Missouri
North and South Dakota
Nebraska
Ohio
Wisconsin
Bermuda
Timothy
Firebrush
Lamb's Quarters
Plantian English
Ragwood Giant
Mugwort
Sorrel, Sheep
Wingscale
Housedust mites
Ash
Box Elder
Elm
Hickory
Maple
Mulberry
Oak
Privet
Willow
Alternaria alternata
Cladosporium herbatum