Ikebana International Boston Chapter #17 announces a demonstration by Grand Master Ingrid Luders, Ohara School of Ikebana, to take place Tuesday, May 2 in the Hunnewell Carriage House at Elm Bank, 900 Washington Street in Wellesley.  Tickets are $20 at the door.  Containers by potters David and Keiko Hergesheimer.  For more information contact Kaye Vosburgh at vosburghk@aol.com, or call her at 617-916-1944.