First thought was an Ebracteola because of the white flower, but the actual plant’s growth doesn’t look right for an Ebracteola. There are some pics of Corpuscularia taylorii that look like your plant. The way your plant gets new growth at the nodes is very Corpuscularia.

Thank you, you are right, is Corpuscularia taylorii (Delosperma taylorii). It seems to me that my plant has slightly longer leaves, but I found this image in which it is an identical plant with my:

https://www.arreesucculentes.com/delosperma/382-delosperma-taylorii.html

Thank you once again.

In the last I identified the plant. Is Corpuscularia britteniae, a species very close to Corpuscularia taylorii and Corpuscularia lehmannii but with longer leaves.