There are more than 1,600 native species of peperomia. They're all part of the peppercorn family, but some 500 of them are ornamental. That's the thing with peperomia, you can collect them. You can probably start a collection of nothing but peperomias, and your friends and family will think that you're growing different plant families. Peperomias have different leaf shapes, sizes, and colors, depending on the variety that you have. Aside from the Peperomia serpens, some of the more common varieties are: • Peperomia argyreia, which is also called the watermelon peperomia because the leaves look like the fruit with its oval shape and silvery pattern • Peperomia obtusifolia, which grows upright and has green and rounded leaves. • Peperomia clusiifolia, better known as peperomia jelly, has multicolored leaves with a green center and cream edges.