My Internet research tell me this is a variety of spider lily (Hymenocallis caribaea 'Variegata'). I found it growing at Magnolia Gardens recently. If someone knows it to be another variety, please let me know. It's a beautiful and exotic looking lily. I don't recall seeing it at the gardens before, or, if so, rarely.
Retired from careers in journalism, teaching, and information technology. True passion is landscape and flower photography, gardens, walking, sunsets, good books, my iPad....