Mo. Rev. Stat. § 214.080
Whenever it shall become absolutely necessary to enlarge any public burial ground or cemetery, and when the public, to the number of five or more persons, interested in the enlargement of said burial grounds or cemetery, and the owner or owners of the adjoining land, cannot agree as to the price to be paid for the same, or for any other cause cannot secure a title thereto, the public, to the number of five or more persons, may proceed to condemn the same, in the same manner as provided by law for condemnation, appropriation and valuation, in cases of lands taken for telegraph and railroad purposes; and on such condemnation, and the payment of the appraisement as therein provided, the title of such land shall vest in the public for the purposes and uses only for which it was taken.
§ 214.080, RSMo