Acer platanoides 'Emerald Queen ' - Washington Park Arboretum, Seattle, accession 1962. For more information see: http://www.mapleinfo.org/htm/mit.cfm.
Emerald Queen was also coined as a trademark (see discussion on this site under October Glory) and not as a cultivar name, the unattractive cultivar name in this case being 'McGill No. 42'.
