Quote from 'The Flowers of Crete':
Pancratium Maritimum (Amaryllidacae)
Known by the common English names of Sea Daffodil or Sea Lily, this perennial has thick flat ribbon shaped leaves, 2 to 4 cm wide, often showing one or more twists in the blade. It flowers from August through October with large fragrant, very showy white flowers; their beauty inspired the ancient wall paintings of the palaces of Knossos on Crete and Thera on Santorini.
This plant is distributed throughout the Mediterranean basin, but since it is the object of indescriminate picking it is becoming somewhat rare.
If you find the odd 'orphan' bulb I can vouch for the fact they can be grown successfully in the UK under glass. I am always tempted to introduce a couple of bulbs into the sand dunes here in Gower and let some local botanist 'discover' them!
Allan