Nepenthes adrianii is a gem of a species and extremely underrated in our opinion. It holds onto many glowing red pitchers at a time and is a vigorous grower. The species is closely related to Nepenthes spathulata which hails from Sumatra while adrianii resides (now in small numbers) on the heavily populated Java.
Plants for sale are horticulturally bred by Carnivero. We crossed a seed grown adrianii from Exotica Plants with a Malesiana Tropicals clone. The offspring have proven even more vigorous than their parents so far.