if in bulk, in which case, however, the invoice or other records accompanying and pertaining to such seed shall bear the various statements required for the respective seeds under section 1571(a), (b), and (i) of this title; or

if in containers and in quantities of twenty thousand pounds or more: Provided, That (i) the omission from each container of the information required under section 1571(a), (b), and (i) of this title is with the knowledge and consent of the consignee prior to the transportation or delivery for transportation of such seed in interstate commerce, (ii) each container shall have stenciled upon it or bear a label containing a lot designation, and (iii) the invoice or other records accompanying and pertaining to such seed shall bear the various statements required for the respective seeds under section 1571(a), (b), and (i) of this title; or

if consigned to a seed cleaning or processing establishment, to be cleaned or processed for seeding purposes: Provided, That (i) this fact is so stated in the invoice or other records accompanying and pertaining to such seed if the seed is in bulk or if the seed is in containers and in quantities of twenty thousand pounds or more, (ii) this fact is so stated on attached labels if the seed is in containers and in quantities less than twenty thousand pounds, and (iii) any such seed later to be labeled as to origin and/or variety shall be labeled as to origin and/or variety in accordance with rules and regulations prescribed under section 1592 of this title.