Ludwigia repens? (species)

Ludwigia species (family Scrophulariaceae). This is most likely a variety of Ludwigia repens and is very similar in all its requirements and growth except it is slightly more robust. This plant can be grown in bunches in the aquarium and cut back when it grows to tall to make the plant branch out more. This plant may be polyploide because the seeds do not seem to be fertile and its growth is very fast.