Keyed in FNA: http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=102636#KEY-1-16.

NOTE:

1. Tawny pappus
2. Apices of phyllaries not with a tuft of white hairs
3. Leaf margins sub-entire to dentate, with basal leaves present at flowering.

In the middle of montane stream.

Style 0.5mm lead blade 20 petiole 25 stems 80 Corolla 7 ac calyx 2mm, epicalyx 0.4 wide? Petals 4

Ultramafic rock complex. Tried the FNA key, got to either Sect. Rubricaules or Sect. Pensylvanicae, but nothing jumped out at me. Need to revisit. Subpinnate leaves are interesting.

8000ft or more.

Height 12 cm, lf length 18 w: 13, x ac 10, pedicle 18, petal 5 long, sepals 4 sepal width 5, calyx 5 long, stipules 7mm
Petiole 50, style length 0.5mm, found on a rocky mountaintop around 2500m.

Keyed in FNA;

1. Petals yellow
2. Plants not stoloniferous
3. Not Beringia
4. Short-styled
5. Alpine plants
6. Leaves ternate
7. Leaflets not with cottony hairs abaxially (compare e.g. https://www.inaturalist.org/observations/87359158, photo #7)
8. Leaves ternate w/ 3 leaflets -> Sect. Aureae (http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=126635#KEY-1-18)
9. Basal leaflets 3
10. Central leaflets not or shallowly lobed (sinuses 1/2 to midvein at most)
11. Leaflets and epicalyces with flat margins (not revolute)
12. Short-styled
13. Petals 5mm -> P. hyparctica.

Growing in steep mesic meadow: Disk achenes 2, disc bristles 4, ray achenes 1.5, ray bristles 4, ray length 3, c ac 10, plant height 100, leaves clasping reduced upwards 20 long, basal spoon shape stalk 30 leaf 20.

Not sure, need to revisit it.