Phacelia lyallii (Gray) Rydb.
Annotated by Peter F. Stickney, 12 Aug 1968.

Montana: Lake County: East St. Marys Peak, Mission Mountains, Flathead Indian Reservation; 9 miles E of St. Ignatius. Elev. 9300 ft.
47.3037° N, 113.9166° W; T18N R18W S20
Coordinate Source: TRS-website.
East face, Lee exposure of the peak
Slope: 50%
Exposure: East
Site: Calcareous bedrock
Site: Semi-active scree slope
Vegetation type: Colluvial strip to patch-plant community
Perennial Herb
Abundance: Locally frequent
Flower color: Purple
Notes: Large central tap root Herbarium of the Forest Service, U.S. Department of Agriculture. Phenology: Flowers.

Peter F. Stickney 1739, Aug 12, 1968
MONTU, Accession: 73288