California Code, Code of Civil Procedure - CCP § 336a

(a) An action upon any bonds, notes, or debentures issued by any corporation or pursuant to permit of the Commissioner of Financial Protection and Innovation, or upon any coupons issued with the bonds, notes, or debentures, if those bonds, notes, or debentures shall have been issued to or held by the public.

(b) An action upon any mortgage, trust deed, or other agreement pursuant to which the bonds, notes, or debentures were issued. This section does not apply to bonds or other evidences of indebtedness of a public district or corporation.