REDITUS NIGRI
REDITUS NIGRI. A rent payable in grain, work, and the like; It was also called black mail. This name was given to it to distinguish it from reditus albi, which was payable in money. Vide Alba firma.
MegaLexica
REDITUS NIGRI. A rent payable in grain, work, and the like; It was also called black mail. This name was given to it to distinguish it from reditus albi, which was payable in money. Vide Alba firma.