I had a chance to explore the Sierra Gorda region of Mexico September 2013. This lovely Ping was growing in the oak forest above Xichu, Guanajuato. Giant red tongue-like leaves, P. moranensis I imagine.
Wow that is amazing! The leaves looks kind of floppy, though. Maybe there was a really big downpour or something.
I think the leaf size, shape and color had to do mainly with the genetics of the individual plants. Right adjacent to this cluster of red giants were others with identical flowers, but normal sized green leaves.
Thank you Fernando! It was thanks to you and the other people who wrote those great postcards at Pinguicula.org that I was able to travel through the Sierra Gorda and find 8 species of Pinguiculas in a week. It made for a fascinating trip. My only regret was that in August the Moctezuma River was running too high (and I am too wary of rattlesnakes) to have followed in your footsteps and seen P. moctezumae.