Ludwigia ID help

[Gorillastomp]

I bought this ludwigia at the lfs around 2 weeks ago and they didn't know what species it was.

It was in its emmersed form. Now that the growth has made its transition, I would think it's ovalis sp.

Am i right ?

 

[_Maq_]

Most common Ludwigias are hybrids.

 

[Hufsa]

Based on probability I would say Ludwigia repens, as Maq said there are a few hybrids and/or cultivars (if this is the right word) on the market.
Since you purchased it from a store, the odds of it being Ludwigia repens 'Rubin' or something very similar is high.
It would help to know what plant nursery your store uses to supply their plants.
It might be different in Canada, but here in Europe Ludwigia ovalis is not a common species in stores.

 

[Gorillastomp]

the odds of it being Ludwigia repens 'Rubin' or something very similar is high.

If it would be that, wouldn't it be way more red and almost purple since i have high PAR in the tank?

 

[Gorillastomp]

It might be different in Canada, but here in Europe Ludwigia ovalis is not a common species in stores

The lfs owner told me it was imported from asia or something like that from his supplier. He took some of them since he never saw them before but couldn't remeber the name.

This is why i would think its ovalis. Could be anything else aswell.

 

[John q]

This is why i would think its ovalis.

Hard to tell from the picture but how many leaves are growing from each node, if it's ovalis you should see a definitive alternate 1 leaf per node, if its repens there will likely be 2 leaves per node.

 

[Gorillastomp]

It's 2 leaves per node.

 

[G H Nelson]

Looks like Ludwigia repens!

 

[Gorillastomp]

Any idea on the variant ?

 

[G H Nelson]

Just standard old repens!

Ludwigia repens - Creeping primrose-willow

The classical aquarium plant Ludwigia repens originates from the south of the United States, Central Americal and the Caribbean, where it grows on the edges of all kinds of waterbodies (ditches, rivers, lakes, ponds). It frequently forms de...

www.flowgrow.de

hoggie

 

[G H Nelson]

I was sold repens last year....which was advertised as rubin......therefore easily mistaken even by sellers!

Ludwigia "Rubin" - Ruby Ludwigia

This strikingly-coloured dark red plant was imported by the Danish aquatic plant nursery Tropica under the name Ludwigia repens 'Rubin'. It is also known as Ludwigia sp. "wine red". Recent research showed that it is not a L. repen...

www.flowgrow.de

Below repens from my new mini grow tank!
Two opposite leaves per node.

hoggie

 

[Gorillastomp]

Is there an encyclopedia of aquatic plants on the net ?

 

[G H Nelson]

Hi
Not that I'm aware of there are various pieces of information on forums!

Plants

Plants

www.aquaticplantcentral.com

Also the from the above Flowgrow and obviously our Plantbase.
This might be of interest to you...... New Plant Expert
hoggie

 

[John q]

Below repens from my new mini grow tank!
Two opposite leaves per node

Just to square the circle. Rubin with it's random leaf count per node.

 

[PARAGUAY]

Is there an encyclopedia of aquatic plants on the net ?

Most refer to flowgrow or Tropica websites, l have a old water plant encyclopedia by Dr Jiri Stodola which bears out what @_Maq_ says above Ludwigia Natans also known as Palustris according to the book

 

[Gorillastomp]

Most refer to flowgrow or Tropica websites, l have a old water plant encyclopedia by Dr Jiri Stodola which bears out what @_Maq_ says above Ludwigia Natans also known as Palustris according to the book

I have already had Palustris in the past and the plant is just more "frail" than this one. This one has bigger leaves, thicker stem etc. Everything is just more robust than the palustris.

 

[_Maq_]

@John q , what is that plant with dissected leaves in the right low corner of your pic? Hottonia?

 

[PARAGUAY]

Apology @Gorillastomp just checked it's not in the plant encyclopedia as l thought, just checking my other books, a lot are misnamed though

 

[John q]

@John q , what is that plant with dissected leaves in the right low corner of your pic? Hottonia?

The plant in question is actually Myriophyllum mattogrossense maq. I often mix the two up myself and had to check back through my records to see which one it was.
This old picture is off my work phone, it might give you a better angle.