Are you sure it's a tuber, Evan? Most of the literature refers to storage roots attached to a rhizome.
And Dave, is there any way to remove one piece of information from the parent plant description or would that necessitate redoing the whole thing and thereby possibly losing information that's already been added to the separate cultivars? I've been removing the "suitable in 1 gallon" info from all the Alstroemerias that I've added data to because most of them would choke to death swiftly in a 1-gallon container.