Fla. Stat. § 713.809

If a lien, as provided for in this part, is imposed on an assignment, farmout agreement, operating agreement, or other equitable interest or legal interest in land or in a leasehold estate, which interest is contingent upon the happening of a condition subsequent, such lien may be perfected and entered against such land or against the leasehold estate, notwithstanding the failure of such interest to ripen into legal title or the failure of such conditions subsequent to be fulfilled.