Ian Heaps Web Site (www.weedscience.org/in.asp) <BR> <BR>182 species resistant to herbicides in the world <BR>8 species resistant to glyphosate <BR> buckhorn plantain <BR> common ragweed <BR> hairy fleabane <BR> horseweed <BR> goosegrass <BR> Italian ryegrass <BR> rigid ryegrass <BR> Palmer amaranth <BR>