Effective - 28 Aug 1957
10.040. State arboreal emblem. — The flowering dogwood scientifically designated as Cornus Florida L. is declared to be the arboreal emblem of Missouri and the state department of agriculture shall recognize it as the official state tree and encourage its cultivation on account of the beauty of its flower and foliage.
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(L. 1955 p. 769 § 1, A.L. 1957 p. 726)