I know that plant as C. retrospiralis, a common Crypt often found in the LFS over here. That is the name it is usually shipped under any way. Grown side by side, the differences are quite evident, color, leaf structure, petiole. ( retrospiralis doesn't reallt have one) OR, I could be totally wrong and the plants I call retrospiralis and balansae are something all together. I like the approach that a crypt guy I know has in identifying his plants... the red one, the greenish red one, the skinny one, the bumpy skinny one... ignorance is bliss...