2 U.S.C. § 2145
On and after , no part of any appropriation for the Botanic Garden shall be used for the distribution, by congressional allotment, of trees, plants, shrubs, or other nursery stock.
(Pub. L. 85–570, , 72 Stat. 450.)
Section was classified to section 216a of former Title 40, prior to the enactment of Title 40, Public Buildings, Property, and Works, by Pub. L. 107–217, § 1, , 116 Stat. 1062.