Leafy!
On the other hand, consider this shoot which is almost devoid of bladders. Yes, there are a few scattered here and
there, but not quite so profusely.
These nearly bladderless shoots make this a
"dimorphic" species. That is one of the ways you can tell this from other large aquatic species, such as
U. inflata or U. foliosa. The latter species, by the way, has
characteristically flattened stolons.