Philodendron melinonii or Upright Philodendron. This plant has impressive paddle-like leaves and fat stems that can be reddish in colour. The stems and veins get a deeper colour as the light levels increase. This plant is both terrestrial and epiphytic. An epiphytic species is one capable of growing on the branch of a tree or climbing a tree in to better collect sunlight. A fully grown specimen of Philodendron Melinonii can reach an impressive sizes of 2.5m in diameter.