Large-flowered sandwort is primarily native to mountainous regions bordering the western and central parts of the Mediterranean Sea. Aptly illustrated in the first photograph, the typical habitat is dry, rocky sites.
These caespitose (growing in dense tufts) plants rarely exceed 20cm (8 in.) in height, adopting a typical alpine plant growth strategy of “grow low”. Adaptive advantages of such a strategy for this species could include: decrease in exposure to wind (and thus decreased water loss), increase in reflected and rock-absorbed heat (perhaps in a better temperature for metabolic reactions for growth, for a longer period of time), and insulation by snow (reducing exposure to winter temperatures). But, perhaps there is a different reason (or a multifaceted reason) for this phenomenon having evolved in this species. As I’ve mentioned before, presuming the benefit of an adaptation without evidence is speculation. In practice, I think one doesn’t do too much harm, but I also think one should communicate that it is provisional if one doesn’t have the research to back it up.