Richard,
As you and Ty mentioned, my SH-3640 High Noon 'Nana is also, the USDA TARS Mayaguez!.....Right now, I got three SH-3640 High Noon 'Nanas blooming!.....All three SH-3640's are approx. 10 ft. tall at flowering/blooming!.....SH-3640 is a very stout, strong and robust 'Nana plant!..... You can check the thread
FHIA-21 Plantain & SH-3640 'Nana Flowering!.....