Alight, sorry is I am being wild goosechasey. To be honest I am a bit on the fence about which species it is.
- It is definitely in the rubra complex.
- I think we can rule out S. rubra ssp. rubra and S. rubra ssp. gulfensis as your plant has yellowish pitchers and a dip in the front of the lip.
That leaves:
- S. jonesii
- S. alabamensis ssp. alabamensis
- S. alabamensis ssp. wherryi
S. jonesii is what I my hunch is but it is a little hard to say for sure. The main reason being that the pitchers have not opened all the way- but it does look kinda like they are wanting to do the bulge thing. On a S. jonesii with mature pitchers, you will want to look for a slight outward bulge in the upper 1/3 of the pitcher tube. It can be kinda hard to see at first (First time I tried iding a S. jonesii/S. alabamensis I had to stare at photos for literally about an hour before it became more clear to me- I still get hung up). If that bulge is present it is probably S. jonesii. Also, from my perspective it looks like the veins in the hood do not fade out at all- particularly in the upper half on the inside. That's a Jonesii trait. Then again, with the angle of the sun it is hard to tell if the color of the outer veins is shinning through or something.
If the bulge is not present, then it is probably a S. alabamensis subspecies.
S. alabamensis ssp. wherryi has more of a tan background color in the pitchers and is more heavily veined:
http://www.sarracenia.com/photos/sarracenia/sarraalab2007.jpg
S. alabamensis ssp. alabamensis has a more yellow background color.
That said, I ain't a biologist so take it for what its worth
(And please do not label your plants if you are not certain, especially if you are thinking about giving them away)