Dear friends. I took this topic a bit more seriously and went to visit the same population 7 days later (no rain) and I am understanding this species a bit better, and I may surprise you a bit. We are talking about a small area of 30x50m. I have photos of the same specimens I photographed above (fresh), and one week later, I can draw some conclusions.
1. I believe that the population is homogeneous, belonging to one Lepista sp.
2. Size of caps varies considerably, but the stipe is always slender, cigarette thick (<10mm)
3. All specimens are hygrophanous (less evident in the fresh/young individuals)
4. There is a gradual change in colour of the pileus and stipe when the fruiting body is ageing, initially (young individuals) are always maroon-violet, rather dull, then gradually become straw to light brown when fully mature/dieing out.
5. The gills also change colour, clean lilac-violet when young, brownish with pinish-lilac hues (esp in the sun) when old
5. The very young fruiting bodies do have a noticeable aromatic scent, somewhat like the pine-resin or fruity, but it definitely fades to nothing when the fruiting body is ageing
6. All specimens clump a lot of pine needles (a few also growing from cones)
7. All specimens produce a white spore print which, when abundant it gets a cream to beige colour.
Please see the photos where in Lepista2.jpg, I photographed side by side the same specimen 6 days later in situ (the violet tones all went when the fb got old) whereas in Lepista3.jpg and Lepista4.jpg I took a sequence of fresh to aging to old fruiting bodies collected in situ at the same time.
I am concluding that these are Lepista sordida in my ignorance of what L. nuda do when dries up, but from the literature, there seems to be a consensus that L. nuda is a non-hygrophanous species (or faintly so), has a robust stem, possess a persistent fruity-aromatic scent, does not brown a great deal with age (because it is not hygrophanous) and keeps its violet colours through its lifespan. I think one should revise the ideas a bit and maybe you have some L.sordida labelled as L. nuda (from the responses I got).