Heart-leaf philodendron is often mistaken for pothos (Epipremnum aureum) because the leaves have a very similar look, roughly heart-shaped. However, the leaves on Pothos plants are wider, thicker, and waxier than philodendron, and the tops of the leaves do not curve inward as dramatically as they do on Philodendron. If your plant has yellow or variegated leaves, it is more likely a pothos rather than a heart-leaf philodendron.