Photo? Never heard of it.
I looked up images of it. Looks like the submersed form of Ludwigia peploides, which is a very widespread species in the New World. It's found up here too. It's essentially a rooted floater but you can sometimes find the brief seedling/submersed stage that has those same leaves and the zigzag stem. For me, it never grew any side shoots with or without trimming and I could not propagate it (Ammannia coccinea is the same way).
So maybe it's a local race that is more adapted to long term submersed growth. Or something else that just looks similar. Can't say.
I looked up images of it. Looks like the submersed form of Ludwigia peploides, which is a very widespread species in the New World. It's found up here too. It's essentially a rooted floater but you can sometimes find the brief seedling/submersed stage that has those same leaves and the zigzag stem. For me, it never grew any side shoots with or without trimming and I could not propagate it (Ammannia coccinea is the same way).
So maybe it's a local race that is more adapted to long term submersed growth. Or something else that just looks similar. Can't say.
