This makes a lot of sense. My tank conditions in the summer time was exactly that! The temperature was consistently at 80C and it thrived for a couple months. When summer was over is when I started noticing the plant to die out. In it's place I have decided to give E. Stellata a try.
Update pics, 9/25/04 - My Planted 75G Tank
Eheim Pimp Club #49, 2028, 2215, surface extractor, autofeeder.