http://www.aquariacentral.com/forums/archive/index.php/t-53245.html
another thread on this topic. And yes, the brown stringy things are indeed roots, not holdfasts lol. But they do a good job of keeping the plant attached to places like rockwork or driftwood. I had better luck growing the plant in the substrate. I tried it both ways. The root tabs in the substrate and the plant "roots" buried. As long as the rhizome isn't buried, you're good.
another thread on this topic. And yes, the brown stringy things are indeed roots, not holdfasts lol. But they do a good job of keeping the plant attached to places like rockwork or driftwood. I had better luck growing the plant in the substrate. I tried it both ways. The root tabs in the substrate and the plant "roots" buried. As long as the rhizome isn't buried, you're good.