Single flower of Furcraea

I photographed this spectacular monocarpic plant a week or so ago, with its spectacular spike of many flowers.  This is a single flower.  I don't know what species it is, but we have had the plant in the garden for about 10 years and this year is put up a massive flower spike.  When the flowers are finished, the plant will die.

Here's the pic of the whole plant: https://www.blipfoto.com/entry/5037770