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This is a discussion on New to Plants within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; --> This is a full tank shot from two days ago (20 gallon tall). The closeup is of the sword on the front right. I've ...

Old 02-27-2012, 07:36 PM   #31
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This is a full tank shot from two days ago (20 gallon tall). The closeup is of the sword on the front right. I've no idea on the species of the label, it was a tube plant from Petsmart. They called it Amazon Sword, but it did have the scientific name in small print. I'll try to remember it next time I'm there and make note of it.

Measuring I got ~9", but without reaching in to pull a leaf straight so they'll be a little longer than that. They are about 8 weeks old.

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Old 02-27-2012, 08:22 PM   #32
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That photo puts it in perspective. I believe that is the species that Rataj calls Echinodorus amazonicus, and stores like Petsmart will likely call it "Amazon Sword." It is nearly identical to E. bleherae, except the leaf blades are much narrower.

As I mentioned earlier, these two species appear to be one, in spite of quite differing appearances. I was just going through Rataj's latest (2004) revision that I got from Heiko Bleher last year and he (Rataj) has a species named E. gracilis that looks very similar to your plant. Lehtonen (2008) has determined this also is a synonym for E. grisebachii. So this one species may look like several different plants.

As I also mentioned previously, all of these can vary according to the environment. It is also probable that your plant was grown emersed, so expect it to change with the new aquatic (submersed) leaf form. In my 70g Ihave 3 "swords" that I initially assumed were E. amazonicus when I bought them over 3 years ago, and they had narrow lanceolate leaves and basically retained them. However, they are now developing leaves nearly identical to the more common form we call E. bleherae, and this occurred when I moved them into the present 70g with Flourite substrate and now using Equilibrium. Further proof to support Lehtonen's findings.

Last edited by Byron; 02-27-2012 at 08:27 PM..
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