Cal. Government Code § 66447

(a) If dedications or offers of dedication are required, they may be made either by a statement on the parcel map or by separate instrument, as provided by local ordinance. If dedications or offers of dedication are made by separate instrument, the dedications or offers of dedication shall be recorded concurrently with, or prior to, the parcel map being filed for record. (b) The dedication or offers of dedication, whether by statement or separate instrument, shall be signed by the same parties and in the same manner as set forth in Section 66439 for dedications by a final map. (c) (1) If a subdivider is required under this division or any other provision of law to make a dedication for specified public purposes on a parcel map, the local agency shall specify whether the dedication is to be in fee for public purposes or an easement for public purposes. (2) If the dedication is required to be in fee for public purposes, the subdivider shall include the following language in the dedication clause on the parcel map or any separate instrument: “The real property described below is dedicated in fee for public purposes: (here insert a description of the dedicated property that is adequate to convey the property).” (3) If the dedication is required to be an easement for public purposes, the subdivider shall include the following language in the dedication clause on the parcel map or any separate instrument: “The real property described below is dedicated as an easement for public purposes: (here insert a description of the easement that is adequate to convey the dedicated property).”