Michigan Compiled Laws, Chapter 600. Revised Judicature Act of 1961 § 600.3316

Sec. 3316. Any person who owns an undivided interest, however acquired, in all of the estates in possession and in expectancy in the land of which partition is sought is deemed to have an estate in fee simple, absolute in possession, in the land to the extent of the least share which he has in any of the estates and is entitled to maintain a claim for partition.