Some folks refer to the Ludwigia genus as “Seedbox” rather than “Primrose-willow” because of the boxy seed capsules most (perhaps all?) species have. However, these seed capsules have different shapes, with, for example, Ludwigia alternifolia having mostly cube-shaped capsules, while this species, Ludwigia decurrens has an elongated seed capsule which, like L. alternifolia, is square in cross-section.
The alternate leaves of Ludwigia decurrens are “decurrent” - the leaf base extends down the stem as “wings”. It is the only Ludwigia with winged stems.
Horseshoe said:Yay! Thanks, Super Sleuth!
I'm a happy camper now. I went looking around my place to see if any more of these are growing but so far this is the only one.
Guess I'll babysit it and might even save some of those seeds pods when they dry. Chelle, I'd be happy to send you some if you want to add to your collection.
Thanks again, folks.
Shoe (off to pick okra and grill it along with a dead chicken for supper tonight )