A beautifully dark form of a tiny, highly variable species!
Also how NOT to acclimate your new plants! Ugh!
From jcoveney70 Lowland Nursery: "This is a very rare form of N. gracilis Black. This is the classic plant that produces the gracefully slim solid black pitchers that are so sought after. Both the upper and lower pitchers of this form turn jet black. They start out an incredible deep maroon color as the pitchers develop but soon turn black as they age. There are many forms of this plant out there, but this is by far the best one that I have ever come across. This plant does very well in terrarium like conditions or in any warm and humid spot. The new leaves get a unique copper color in strong light but the pitchers end up deep black no matter what. I only produce only a very small number of this very special Nepenthes every year. This plant needs good light to show its full potential."