525 ILCS 47/1

Any person, firm or corporation who knowingly buys, sells, offers or exposes for sale any blood root (Sanguinaria canadensis), lady slipper (Cyprepedium parviflorum and Cyprepedium hirsutum), columbine (Aquilegia canadensis), trillium (Trillium grandiflorum and Trillium sessile), lotus (Nelumbo lutes), or gentian (Gentiana crinita and Gentiana andrewsii), or any part thereof, dug, pulled up or gathered from any public or private land, unless in the case of private land the owner or person lawfully occupying such land gives his consent in writing thereto, is guilty of a petty offense.