Residents and town officials gathered Aug. 22 at a joint meeting of the Planning Board and the Board of Selectmen to hear about a proposal from Boston resident Jonathan Napoli , representing the nonprofit entity Planting Hope, to use 263 King St. as a cultivation site that would supply a registered medical marijuana dispensary. The new law allowing medical marijuana calls for up to 35 licenses statewide for operations that would grow and dispense pot to patients with prescriptions. The dispensary would not be located in Littleton. The town has a moratorium on medical marijuana-related facilities through June 2014, to give local officials time to develop zoning bylaws that would determine where they would be allowed. Communities do not have the authority to ban medical marijuana facilities, according to the state attorney general’s office.