Somewhat to my surprise, when we were in the Pyrenees in July 2021, we only saw one gentian plant. It was this one in the photo, a dwarf gentian Gentianella sp. This is in contrast to the dozens of gentian species and hundreds of gentian plants we saw in Switzerland in July 2018.
I think this one must be Field Gentian Gentianella campestris (Fr. Gentiane des champs).