06-16-2010, 03:53 PM
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Originally Posted by Sweet Aquatics
I am still convinced it is a crispus or an undulatus. The elongatus from what I have read will develop floating leaves as well as submerged. The crispus and undulatus do not have floating leaves if I am remembering correctly.
The Ulvaceous has very wide (4"+) tightly twisting leaves that will reach 3 feet long in a week or so. Very cool plant if you have the room.
There may be a mixup in names. According to Hiscock, A. ulvaceous leaves are 4-6 cm/1.6-2.4 inches wide and 14-16 inches in length. But the photo in his Encyclopedia is to me near identical to the plant photos in this thread, and after more digging online I think the photo is more likely A. undulatus, so I would think that is likely.