I believe this is Agave attenuata instead of de-meesteriana. Take a look at some of the images here and see what you think.
Foxtail Agave (Agave attenuata)
The long stems are the main giveaway, along with the shape of the leaves. I'm not convinced all the images under de-meesteriana are correctly identified at the moment, for what it's worth. The key feature is an urn-like shape to the core of the rosette, with recurved and channeled leaves.
I will move the image to the other entry but I welcome your opinions and feedback if you disagree (or otherwise).
