Meet the gorgeous Calathea Medallion - a popular Calathea variety with unique foliage. Watermelon colors of dark red on the bottom and variegated green and yellow on the top make its leaves stand out. Officially called Calathea Roseopicta Medallion, these Brazilian beauties have earned the nickname 'prayer plants'. This is because they raise and lower their leaves throughout the day as if in prayer. The Calathea Medallion is relatively easy to care for, thriving in humid environments.