I have been working at learning to grow Pinguicula planifolia. I am beginning to have some success. Yeah!
I recently managed to get viable seed from selfing a solitary flower on a plant of this species that I just added to my collection.
Curious though, when the seed pod split open to indicate the seed was "ripe", I noticed that most of the seed were still green, (not just to indicate they were unripe, but they were actually a light shade of green) though a few were almost brown. Not wanting to lose any chance I might have at growing this species from seed I sowed them all on the black sand surface of a pot I had previously prepared for this purpose. I kept checking on them frequently with a 10X loupe. What I saw was that first, all of the "green" seed slowly turned brown, then they began to germinate. Presently, about a month later, I have quite a few small Pinguicula planifolia seedlings whose leaves which were initially green are developing a nice pink/red tint and seem to be growing well.