Is this actually Rotala H'ra Vietnam - The Planted Tank Forum
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post #1 of 13 (permalink) Old 10-09-2020, 06:14 PM Thread Starter
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Is this actually Rotala H'ra Vietnam

This looked more "rotala like" when I bought it but has become very broad leaf. It was purchased as and labeled as "Rotala H'ra Vietnam". But I don't see any pictures of it online where it looks like this. If it is not Rotala H'ra Vietnam, what is it? (that is a different variety of Rotala surrounding it).

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post #2 of 13 (permalink) Old 10-09-2020, 06:55 PM
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Looks like Ludwigia Palustris to me
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post #3 of 13 (permalink) Old 10-09-2020, 07:52 PM Thread Starter
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Wow. I had ordered from That Fish Place and they gave a bad online order experience. After paying for stuff they contacted a few days that they don't actually have half of it even though website showed in stock (and had me pay for it). Told them to send what parts of the order they had and I think they willy nilly sent me whatever they wanted. They sent miscounts of items, missing some, and got one thing I didn't order. So I presume in that mess of an order they mislabeled this as Rotala H'ra Vietnam.

The shorter red plant in front of it is some "super red" Ludwigia I recently got (elsewhere). The leaves are different shape. Is all Ludwigia "Super Red" the same as "Palustris"?
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post #4 of 13 (permalink) Old 10-15-2020, 10:00 PM
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Originally Posted by ahem View Post
Wow. I had ordered from That Fish Place and they gave a bad online order experience. After paying for stuff they contacted a few days that they don't actually have half of it even though website showed in stock (and had me pay for it). Told them to send what parts of the order they had and I think they willy nilly sent me whatever they wanted. They sent miscounts of items, missing some, and got one thing I didn't order. So I presume in that mess of an order they mislabeled this as Rotala H'ra Vietnam.

The shorter red plant in front of it is some "super red" Ludwigia I recently got (elsewhere). The leaves are different shape. Is all Ludwigia "Super Red" the same as "Palustris"?
I don't know the origin of the 'super red' but it's not the same thing as the palustris you might find along ponds and wet places in much of the US. The latter is a bit bigger and more of a peach color.
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post #5 of 13 (permalink) Old 10-16-2020, 06:31 AM Thread Starter
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I figured out the answer to this I believe. The plant that is circled is Ludwigia Repens 'Super Red'. The shorter one in front of it is Ludwigia Peruensis. I'm a newb with plants but know some of them. The super red was difficult to figure out because is different than other Ludwigias in that it's leaves are not the perfect flat elongated oval shape. They get very red and somewhat "wrinkly" and misshapen.

Like this (mine is not this red yet but getting there):
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It's a great stem plant, grows SUPER fast, must faster than the Ludwigia Peruensis I have. It's more like a Rotala in growth rate.
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post #6 of 13 (permalink) Old 10-16-2020, 09:30 AM
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Originally Posted by ahem View Post
this looked more "rotala like" when i bought it but has become very broad leaf. It was purchased as and labeled as "rotala h'ra vietnam". But i don't see any pictures of it online where it looks like this. If it is not rotala h'ra vietnam, what is it? (that is a different variety of rotala surrounding it).

Attachment 903933
alternanthera
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post #7 of 13 (permalink) Old 10-16-2020, 12:45 PM
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There is no such thing as "Ludwigia peruensis" in the scientific literature. It's just a made up nonsense trade name. The correct name for that plant is Ludwigia glandulosa. If your plant has alternate leaves (one per node), it's that. If opposite leaves, it's Alternanthera reineckii. Just hard to tell for sure from the photo.

The 'super red' appears to be palustris, not repens. But some flowering material would make it easier.
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post #8 of 13 (permalink) Old 10-16-2020, 02:43 PM Thread Starter
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There is no such thing as "Ludwigia peruensis" in the scientific literature. It's just a made up nonsense trade name. The correct name for that plant is Ludwigia glandulosa. If your plant has alternate leaves (one per node), it's that. If opposite leaves, it's Alternanthera reineckii. Just hard to tell for sure from the photo.

The 'super red' appears to be palustris, not repens. But some flowering material would make it easier.
It it confusing since lots of plants are called alt names. But yes, the one it front I purchased as "Ludwigia peruensis" from ModernAquarium, in fact just ordered a few more bunches of it. I had found a few nights ago that its scientific name is Ludwigia glandulosa. I also have Alternanthera reineckii, both regular and "mini" varieties in the tank and it isn't that.
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post #9 of 13 (permalink) Old 10-16-2020, 04:59 PM
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I am in Montreal and Ludwigia super red doesn't exist here I have grown Ludiwigia Repens its nowhere close to that pinky red. Those super glowing red shots you see are usually someone who is shining purple/red light on their tank or who pumped up the saturation in photoshop not a realistic look to shoot for. I have gotten a nice saturated dark red but nothing like the picture above.


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post #10 of 13 (permalink) Old 10-16-2020, 07:17 PM Thread Starter
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I am in Montreal and Ludwigia super red doesn't exist here I have grown Ludiwigia Repens its nowhere close to that pinky red. Those super glowing red shots you see are usually someone who is shining purple/red light on their tank or who pumped up the saturation in photoshop not a realistic look to shoot for. I have gotten a nice saturated dark red but nothing like the picture above.
I don't know many of the plants yet but I would hazard a guess Ludiwigia Repens Super Red is one of the fastest red growers. I got them as green stems at about a foot tall. They converted to immersed, went red, and hit the top of the 20" high tank in just a few weeks. I've already replanted many cuttings. Mine have gotten redder since last I first posted but nothing like that deep red pic. The orange in these is beautiful too.

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post #11 of 13 (permalink) Old 10-16-2020, 09:14 PM
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I don't know many of the plants yet but I would hazard a guess Ludiwigia Repens Super Red is one of the fastest red growers. I got them as green stems at about a foot tall. They converted to immersed, went red, and hit the top of the 20" high tank in just a few weeks. I've already replanted many cuttings. Mine have gotten redder since last I first posted but nothing like that deep red pic. The orange in these is beautiful too.
cl3537 is correct about the violet spectrum causing this color. Par plays a role, but more in making the coloration uniform across the leaf.
My SBReef lights with channel A cranked makes the ludwigia super red mini look like the picture you posted above, with it off it looks like your pictures, only difference is the violet/blue/cyan channels aren't there to stimulate the carotenoids and reflect the deep red color (I think that's how it works).
Channel B has red and deep red diodes in it, and they don't create the deep red coloration in the plant visually, so it's more than just adding red to make a plant redder. The violet spectrums will make the plants fluoresce in a way like corals do, at least in my experience working with it. This effect is why you see many T5-HO builds incorporate purple or actinic bulbs into their lineup because it brings out the colors to a much deeper degree visually.

Channel A on Channel B off:


Channel A off Channel B on:

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post #12 of 13 (permalink) Old 10-16-2020, 11:50 PM
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I am in Montreal and Ludwigia super red doesn't exist here I have grown Ludiwigia Repens its nowhere close to that pinky red. Those super glowing red shots you see are usually someone who is shining purple/red light on their tank or who pumped up the saturation in photoshop not a realistic look to shoot for. I have gotten a nice saturated dark red but nothing like the picture above.
ABC plants in Montreal sells Ludwigia sp. super red (Palustris 'super red') as a tissue culture if your looking for some. It is a deep red even under daylight bulbs.
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post #13 of 13 (permalink) Old 10-17-2020, 05:54 PM
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I don't know many of the plants yet but I would hazard a guess Ludiwigia Repens Super Red is one of the fastest red growers. I got them as green stems at about a foot tall. They converted to immersed, went red, and hit the top of the 20" high tank in just a few weeks. I've already replanted many cuttings. Mine have gotten redder since last I first posted but nothing like that deep red pic. The orange in these is beautiful too.

Attachment 904271
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Beautiful your colors are natural and similar to what I have observed.

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Originally Posted by Hendy8888 View Post
ABC plants in Montreal sells Ludwigia sp. super red (Palustris 'super red') as a tissue culture if your looking for some. It is a deep red even under daylight bulbs.
Thank-you I have been meaning to contact ABC as the store I usually go to is only open a few hours a week now due to Covid-19.
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