07-09-2010, 06:46 PM
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The top photo of the sword with the inflorescence is Echinodorus bleherae [sometimes still seen as E. bleheri though Rataj corrected the name]. The larger (outer) leaves are more likely the emersed form, submersed (new) leaves will be larger as the plant establishes itself and easily reach to the surface. This plant's leaves grow to 60cm (20+ inches); Rataj says the blades are half the leaf length but on my larger plants it is more, not quite 2/3. Once settled, very hardy and will send out 1 or 2 inflorescences sometimes twice a year, with many daughter plants. Will not flower grown submersed. This species prefers being submersed [not sure how they know that, but ...
The lower smaller plant could be the same, or it may be E. parviflorus, the original native species as opposed to the "Tropica" form that seems to be more common. Both forms are pictured in our profile of this species, listed under Dwarf Sword [I had to make up the common name]. I believe I have this plant in my 90g, I had assumed previously that it was E. amazonicus which is very similar, near identical, to E. bleherae but smaller and the leaves are narrower. I'm inclined to think now it may be E. parviflorus.