Mo. Rev. Stat. § 474.470: Rule in Shelley's case abolished, effect.

Where under a will a remainder is devised which is limited to the heirs, or heirs of the body of a person to whom a life estate in the same premises is devised, the persons who, on the termination of the life estate, are the heirs, or heirs of the body of the life tenant, are entitled to take as purchasers in fee simple, by virtue of the remainder so limited in them.