505 ILCS 110/2.107
"Certified Seed" means one of four classes of seed: (1) breeder, (2) foundation, (3) registered and (4) certified, as determined under procedures established by the Association of Official Seed Certifying Agencies and referenced in its official Certification Handbook.
(from Ch. 5, par. 402.107)
(Source: P.A. 85-717.)