Mich. Comp. Laws § 67.63
The board of cemetery trustees may receive in trust money or other property as gifts, grants, devises, or bequests for cemetery purposes. The money or other property shall be held in trust by the board, subject to the terms and conditions on which it was given, granted, devised, or bequeathed, and shall constitute a trust fund. The money shall, unless otherwise expressed by those making such gifts, grants, devises, or bequests, be invested as permanent fund in undoubted real estate security, U.S. bonds, state bonds, or municipal bonds, and the interest thereon after fulfillment of such conditions expressed shall be used in improving the cemetery under the control of the cemetery board. The gifts, grants, devises, or bequests shall be used exclusively for cemetery purposes.
MCL 67.63