This is one of the most heavily veined individuals from the S. flava var. ornata 'black veins' Bulloch Co, GA batch. This group of individuals can get solid dark black veins on the top of the lid, and I suspect the veins on the body could turn black as well, although it doesn't do that for me (maybe it could under greenhouse conditions?) When the traps just open, the veins on the top of the lid are red, but as the traps age, the veins turn black.
Interestingly enough, clone E in particular has always been so slow to grow and has not produced decent pitchers for 16 years! This is the first year that I've seen it in its fullest glory-the veins are incredibly dense. Have you ever seen anything with such intense veination, and no red pigments in between the veins? It might have taken so long to shine because this plant was neglected for a long time, but in any case, this thing is EXTREMELY slow growing.
S. flava var. ornata 'black veins' clone E Bulloch Co, GA: