While it is understandably easy to get both the melanochrysum and micans mixed up, there are a few key differences in leaves that separates the two philodendron plants. First, the leaves of the melanochrysum are significantly larger than that of the micans; the leaves on Philodendron melanochrysum plants can reach a whopping 24 inches long! Secondly, the coloring of their leaves are slightly different as well. The leaves of the micans has a reddish-burgundy tone to them, while the melanochrysum has leaves with golden veins.