I stopped by a petsmart today and they had some "misc. annubias marked down" The picture on the tag looked like this plant. It was cheap so I got it as I am starting to plant my tank. The reason I ask is that my other annubias have more of a horizontal rhizome and the roots on this looked more like a sword. I have it planted in the substrate right now because I didn't really see a rhizome so to speak. Do all annubia have the horizontal rhizome or not. Thaks for the help.