.-When seed of a notified kind or variety is offered for sale under section 7, each container shall be marked or labelled in the manner hereinafter specified. The person whose name appears on the mark or label shall be responsible for the accuracy of the information required to appear on the mark or label so long as seed is contained in the unopened original container:Provided, however, that such person shall not be responsible for the accuracy of the statement appearing on the mark or label if the seed is removed from the original unopened container, or he shall not be responsible for the accuracy of the germination statement beyond the date of validity indicated on the mark or label.
