[Sergeant Dude]

Picked this up from the pet store I work at a couple days ago. Our distributor labeled it as ludwigia peruensis (glandulosa) but from what I can tell that is completely wrong. A buddy of mine said it might be cherry hedge but I cant find any good pictures of that to compare it to.

 

[peachii]

It looks like an emersed grown ludwiga, no idea what species though. Maybe after it grows out some will be able to tell. All the ones from Petco I've seen that look like this turn out to be repens.

 

[Tinanti]

That actually is L. glandulosa. Alternate leaves, among other characters. "L. peruensis" is a BS name that does not exist botanically; it's a perversion of L. perennis, an Asian species not in the hobby.