I have 2 different clones of albiflos. One that is apparently indestructable and is very easy to grow and flower. Looks very much like the photo above. The other flowers later and has wider leaves, twice the length. Unfortunately they both flower around the same time as I cram my frost free greenhouse with a lot of other plants for the winter, and the humidity goes sky high, and the flowers end up covered in fungus as they go over. Never had seed form fully, just too damp to stay healthy.
By chance I kept a stray small bulb of one of these forms over last winter in the unheated greenhouse, just by the door so will have been frosted several times. Came through fine with no damage, so maybe they are tougher than I thought.