Last year I bought a batch of inermis from Malesiana. There appear to be a number of clones, because there is a fair bit of variability in pitcher colour. Some are pure green, some have a tiny hint of red, and some are flushed with red. One has gone a deep burgundy, and is definitely not pure inermis given its colour and pitcher shape.
Does anyone else have a Malesiana inermis which has proved to be a hybrid, and worked out what the cross is? At this stage, this plant is too small to really tell, and it doesn't match any of the species that Charles Clarke says inermis hybridises with in the wild.