It emerged from a cross between S. tridactylites and S. adscendens probably after the last ice age and formed a distinct and reproductive species (Artsdatabanken 2010).

European assessment: Vulnerable (VU) B2ab(iii,iv,v)c(iv)
EU27 assessment: Vulnerable (VU) B2ab(iii,iv,v)c(iv)

Saxifraga osloënsis is endemic to Norway and Sweden with the latter holding a bigger part of the population. The area of occupancy is less than 2,000 km² for both countries and the distribution area is severely fragmented. From Sweden, extreme fluctuations of the populations have been observed. A population decline is suspected based on a decline of habitat quality, number of locations, and number of mature individuals. The Norwegian populations are also continuously declining and a past as well as future decline of 15-30% is being suspected. The main threat is abandonment of land use and the subsequent overgrowth of the species habitat. Therefore it is classed as Vulnerable at European and global level.

Within the EU 27, Sweden is the only country to host this Saxifraga osloënsis. The number of mature individuals in Sweden has been estimated to be 500,000 individuals. The populations are extremely fluctuating and a population decline is suspected based on a decline of habitat quality, number of locations, and number of mature individuals. Its area of occupancy is 1,256 km². There are more than 250 known occurrences but its distribution area is severely fragmented. Overgrowth is the main threat to the species and it has been assessed as Vulnerable.

Saxifraga osloënsis is endemic to Norway and Sweden.

Its extent of occurrence in Sweden is 42,956 km² and the area of occupancy is 1,256 km². There are more than 250 known occurrences but its distribution area is severely fragmented (ArtDatabanken 2010). The area of occupancy in Norway is less than 500 km² (Artsdatabanken 2010).

The number of mature individuals in Sweden has been estimated to be 500,000 individuals. The populations are extremely fluctuating: in some years it is difficult to find it and in some years it is common. A population decline is suspected based on a decline of habitat quality, number of locations, and number of mature individuals (ArtDatabanken 2010).
In Norway, the species is restricted to the southeast and has recently been detected at two new sites in Kongsvinger. The populations are continuously declining and a past as well as future decline of 15-30% is being suspected (Artsdatabanken 2010).

Saxifraga osloënsis is usually an annual species and grows on rocks or cliffs with thin soil cover, especially small flat outcrops in pastures and near roads. It is an opportunistic species that cannot germinate without moisture and flowers for just a few weeks.

Abandonment of land use and the subsequent succession of different vegetation has been described as a threat to the species (ArtDatabanken 2010, Artsdatabanken 2010).

Saxifraga osloënsis is listed on Annex II of the Habitats Directive.
In Sweden, it has been classed as Vulnerable B2ab(iii,iv,v)c(iv) (Gärdenfors 2010). It is classed as Near Threatened approaching A2bc+3c; B2b(ii,iii,iv,v) in Norway (Artsdatabanken 2010).