The identity of Arisaema pangii H. Li (Araceae) has been doubtful ever since it was published. Various authors treated it under either A. nepenthoides or under A. wattii. Arisaema pangii is recognized as a distinct species based on morphological and molecular data, and it is placed in sect. Nepenthoidea. A detailed description, notes on the taxonomy and colour images are provided for easy identification.