In the signatures of royal persons, "R." is an abbreviation for "rex" (king) or "regina" (queen). In descriptions of land, according to the divisions of the governmental survey, it stands for "range." Simms v. Rolfe, 177 Ark. 52, 5 S.W.2d 718, 719.)
Black's law dictionary.
HENRY CAMPBELL BLACK, M. A..
1990.