I bought the "betta bulbs" at the 45th St. Petco, Seattle, and ended up (even in just a bowl/betta/gravel combo) with a water lily and an aponogeton. Which is why I now have a small beginning planted (filtered!) tank, and they're both doing well, as well as my betta being much happier.
I can't tell what kind of Aponogeton it is, though it also bloomed, just after I planted it. Palish green leaves, 3 inches long, slight ruffle on the edge. The leaves are mostly floating, an I haven't seen anything quite right, though the ID sites seem to show immersed leaves. which I now know are different. I mostly know it's an Aponogeton from the infloresences. Any suggestions of references?