It is multicelluar plant.
ragweed
Ragweed is one of the biggest causes of sneezing.
Any plant that starts with an R will do - like ragweed or roses.
Boliaun is the Gaelic name for the plant known as regwort or ragweed because of the ragged shape of the leaf.
Ragweed does not have thorns.
The scientific or taxonomic name would be Ambrosia psilostachya.
The scientific or taxonomic name would be Ambrosia artemisiifolia.
Ragweed antigens bind to mast cells, which release histamines.
The book Ragweed by Avi has 224 pages.
yes, poison ivy can cause a rash when it makes contact with skin
http://en.wikipedia.org/wiki/Ragweed here is a link