The type collection number '4981' is erroneously mentioned in the protologue due to the slight difference between '3' and '8' on the collection label. Comparing the labels of the several isotypes clearly demonstrates that 4391 is the correct collection number. This is confirmed by Spruce's fieldbook where 4391 is indeed Peperomia whereas 4981 is Chaetogastra lepidota C.DC. [Mathieu, 2009, pers. comm.]