[gnatster]

Thanks in advance..

 

[Raul-7]

Ludwigia repens v 'Rubin'

 

[Error]

Heh, that could be anything, really...there's no sure way to even say that it's L. repens.

IMO, the possibilities include:

Ludwigia repens
L. palustris
L. repens x L. palustris (the likeliest, I think)
L. repens 'Rubin'

Where did you get it?

 

[Cavan Allen]

It's definitely not palustris. It's more likely repens or the palustris/repens hybrid.

 

[Error]

It's definitely not palustris. It's more likely repens or the palustris/repens hybrid.

I don't think there's any way to say that for certain; several forms of plants I flowered over the summer that greatly resembled the classic L. repens turned out to be L. palustris. The species are very similar in everything but the flowers and I don't think there's much of a chance to get a positive ID from the vegetative characteristics.

Nate, if you want to donate a stem I can flower it this summer and see what I get

 

[Cavan Allen]

You can never be 100% sure, but they aren't so similar that you can't see any vegetative differences. I'd be willing to bet that if you flower that stuff, you'll get some petals.

 

[gnatster]

Thanks

As you may notice from the picture the plant is about grow out of the water. Will that flower soon, or how do I get it to flower?

I have plenty of stems of this mystery and it grows fast. I'd be happy to send out samples.

 

[Cavan Allen]

Just let it grow up out of the water. Flowers will be in pairs at the nodes. If there are any yellow petals, that instantly rules out L. palustris.