Physaria lesicii (Rollins) O’Kane & Al-Shehbaz
Annotated by Walter Fertig.

Montana: Carbon: [locality and coordinates withheld; status in Montana: S2 (Imperiled; MTNHP)],
Steep canyon; shady ledges in north-facing cliff wall of gray limestone in Pseudotsuga menziesii / Acer glabrum forest with understory of Physocarpus monogynus, Rubus idaeus, and Symphoricarpos. Erigeron allocotus, Musineon vaginatum Uncommon, along shady walls. Petals deep yellow, stems weak, ascending, petioles of basal leaves very elongate (4x longer than blade), blade roundish. In cracks with Leucopoa, Elymus spicatus, Kelseya uniflora. Https://intermountainbiota.org/portal/collections/individual/index.php?occid=33330568. Phenology: Flowering.

Walter Fertig 19453, May 31, 2001
WS, Catalog: 412426, legacyOtherCatalogNumber: WS036574