Bonds shall bear dates prescribed by the Board in the indenture providing for their issuance. Bonds may be serial bonds, term bonds or sinking fund bonds with such maturities as the indenture shall specify. No bond by its terms shall mature in more than fifty (50) years from its own date and, in the event any authorized issue is divided into two (2) or more series or divisions, the maximum maturity date herein authorized shall be calculated from the date on the face of each bond separately, irrespective of the fact that different dates may be prescribed for the bonds of each separate series or division of any authorized issue.

SOURCE: GC § 21567.