Alocasia is a genus of about 70 species in the Araceae family. These rhizomatous or bulbous perennials occur in tropical humid climates of southeast Asia and a few other places. They are grown as ornamentals for their large heart-shaped or arrowhead-shaped leaves, sometimes called African Masks or Elephant's Ears. These plants are variable in size, height, shape, and leaf color.
Alocasia × amazonica has glossy, very dark green, leaves with silvery veins and undulating margins, giving them a bat wing quality. It's a hybrid of A. lowii var. grandis × A. sanderiana. Photos taken May 2007 by Jay Yourch.
Alocasia cuprea has silvery leaves with impressed dark veins, giving them the look of hammered metal. The backs of the leaves are a rich, reddish purple. Photos taken May 2007 by Jay Yourch.
Alocasia 'Frydek' grows outdoors in a large pot and likes nitrogen and plenty of water. Photo by Arnold Trachtenberg
Alocasia macrorrhiza has huge, glossy, green leaves with raised veins and when mature it forms a woody trunk. It grows well in full sun to part shade and average to moist soils. Photos taken August 2007 by Jay Yourch.
'Lutea' is a selection of A. macrorrhiza with yellow petioles and leaf veins. Photo taken August 2007 by Jay Yourch.
Alocasia rugosa is a small plant with stiff, dark green leaves that look and feel like plastic. Photos taken May 2007 by Jay Yourch.