Nepenthes maxima X burbidgeae is a hybrid between two highlanders. I've only seen one other hybrid with N. burbidgeae and that was N. burbidgeae x N. edwardsiana from Malesiana Tropicals. I came upon this plant from a private grower and he said it was one of his favorites. The plant does well for me outdoors in typical highland conditions and is just now producing new pitchers. Some of the existing pitchers were not as deeply colored as the one above. They were more green and had a cylindrical shape to the pitcher. I've found that this hybrid is a vigorous grower outdoors. My cuttings are still small but are beginning to take off. From the looks of things, I have great expectations for this hybrid. Since I have never seen other plants to compare mine to I don't know what it will eventually look like as an adult.
highlander (not a naturally occurring hybrid)
Cultivation: easy; moderate, vigorous grower outdoors
Market availability: rooted cuttings; extremely limited (never seen it commercially produced)
Species variability: unsure (haven't seen any other specimens to compare)
$ / size: moderate $30.00 and up
Cuttings: none available for trade