My first thought was Agave angustifolia too so I googled for for A. angustifolia variegata and looking through all the photo's (specifically looking for pictures of of small pups) I found one of Stush's photo's. This came up in the google search for Agave angustifolia variegata:
http://s1126.beta.photobucket....
They sure are pretty plants but Oooooh, so thorny!
