Any irregularity or error in the description of land assessed shall not be deemed jurisdictional or render the assessment void, if the land assessed can be identified. All matters and things done by the board of directors as by law provided are prima facie evidence that all the requirements of the law in relation thereto have been complied with, and that the same are liens against the property to the same extent as other taxes lawfully levied. When land is sold under the revenue laws of this state for irrigation assessments correctly imposed as the property of a particular person, no misnomer of the owner, or supposed owner, or other mistake relating to the ownership thereof, affects the sale or renders it void or voidable. Such sale or procedure relating thereto shall not be attacked or questioned for any reason, or on any grounds except that the land assessed was not subject to such assessment, or that such assessment had been paid at the time of the sale.