An unusual and attractive member of Anthurium sect. Dactylophyllium was discovered in French Guiana by the naturalist Joep Moonen, in honour of whom the species is named. Anthurium moonenii is characterized by 3-lobed leaf blades, slender, generally pendent segments with numerous deeply sunken primary lateral veins, and long-pedunculate inflorescences with pendent, very elongated, slender, pale green spadices and greenish yellow berries.