One would think, but one would be incorrect.

I thought the same thing until I started doing some research. And when I had mine in a tank with high light and CO2 injection, they shot skyhigh. Literally within a day, one leave sprouted and the stem got so long it stuck out the top of my 10g tank!
Check out some pics:
http://aqualandpetsplus.com/Plant,%20Dwarf%20Lily.htm
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Tina
Puffers:
Auriglobus silus x2
Colomesus asellus x1
Tetraodon travancoricus x1
Tetraodon biocellatus x2
Tetraodon nigroviridis x1
Tetraodon baileyi x2
Tetraodon lineatus x1
Tetraodon palembangensis x1
The greatness of a nation and its moral progress can be judged by the way in which its animals are treated. - Mohandas Gandhi