Here are my collection of N. sanguinea. Pitchers size varys from 10cm to 20cm. A couple of months back 3 plants from Genting Highlands flowered - 1 male and two females. In one of the photos you will see seeds amongst the upper pitchers.
Plants from Cameron Highlands tend to be more spotty. While the Genting Highland varieties show dotty and "sanguine" colour on top.
Lower pitcher, Genting Highlands (GH) showing a very red lid
LP, GH with a very red peristome
Intermediate and upper pitchers (GH)
Green upper pitcher (GH) amongst staghord fern. Note the new form seeds
Another upper pitcher (GH)
More lower pitchers (GH)
Spotted variety from Cameron Highlands (CH)
Elongated variety from Cameron Highland
Another long from pitcher (CH)
Hope you enjoy the pics