I think this plant is Mountain Phlox Linianthus Grandiflora.

And now the correct name is Leptosiphon Grandiflorus?

Yes, that is probably it, and the current name is Leptosiphon grandiflorus.
NB. In binomial plant names, the genus name (Leptosiphon) is capitalized, and the species name (grandiflorus) is not.
It would be very nice if font options (e.g. italics, bold, underline, etc.) could be provided for use in this forum.

Thanks Lori !
The naming of plants is sometimes confusing to those of us who have not studied it.

Have we reached a consensus? Shall I move the photo to the Leptosiphon grandiflorus entry? Another member suggested in a tree-mail that it might be Leptosiphon parviflorus. Is that possible?

Variable Linanthus (Leptosiphon parviflorus)

I think it is more likely the grandiflorus.
Please do move the photo.