Different subspecies/forma. The Chilean frutillas blancas are F. chiloensis ssp. chiloensis f. chiloensis. They also also have red ones though, F. chiloensis spp. chiloensis f. patagonica.
The native Beach strawberries to the US west coast are F. chiloensis ssp. pacifica, though F. chiloensis ssp. lucida from Canada were introduced.
I think I have seen white chiloensis in the Washington Cascades. The fruits are small, pinky nail sized. Next summer I'll go back and try to get a better ID.
There may be a naming inaccuracy here.
I have about 150 square feet of the damned things. From twelve starts. They sure like to self-propagate.