Adelonema wallisii (synonym Homalomena wallisii) is a species of aroid plant (family Araceae) native to Venezuela, Colombia, and Panama.
It reaches about in height, but with a much wider horizontal spread. The leaf blades are elliptic to ovate-oblong in shape about in length, on rather short stalks, arching or recurving, bright-green with a markings of a marbled yellow.
It can be confused with the related genera Aglaonema or Dieffenbachia, especially Aglaonema pictum 'Tricolor' or Dieffenbachia 'Reflector', both of which have similar markings.