came up in yard,WEED? Thanks for the info, I'm going to call this one solved with the I.D. of Iva Annua, also called marsh elder,sumpweed,sulfaweed.I thought this looked a bit like ragweed, and according to the info i got from the internet it is a relative. So this one has gone bye bye, the last thing I need in my yard is an allergen! Thank you very much for the info.