12 - Action or proceeding by unincorporated association.

§  12.  Action or proceeding by unincorporated association.  An action  or special proceeding may be maintained, by the president  or  treasurer  of  an  unincorporated  association to recover any property, or upon any  cause of action, for or upon which all the associates may maintain  such  an  action  or  special  proceeding,  by  reason  of  their  interest or  ownership therein, either jointly or in common.  An action may  likewise  be maintained by such president or treasurer to recover from one or more  members  of  such  association  his  or their proportionate share of any  moneys lawfully expended by such association for  the  benefit  of  such  associates,  or  to enforce any lawful claim of such association against  such member or members.