on stone wall
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... in the first photograph.
There is what looks like Umbilicus rupestris in the upper left.
The Asplenium appears to have green rachises, in which case it could be Asplenium trichomanes-ramosum rather than Asplenium trichomanes agg.
I have some pictures of the left upper plant, but wanted a sharper one ... see next observation then.
From what I read:
S. brevifolium has ovoide or globular leaves shape and higher density of them. It is also rare in this region
S. Dasyphyllum can have glabrous leaves but exceptionaly and is normally hairly at least close to the flowers (not the case here), it can have flater leaves than S, brevifolium, like here. It also fits better for the region
I can't decide. The most similar leaves I have seen are S. anglicum, but the shape of petals doeasn't fit well...
Lat/Lng: 42.95, -3
Spanish Basque country