Lomatium grayi, commonly known as Gray's biscuitroot, Gray's desert parsley, or pungent desert parsley, is a perennial herb of the family Apiaceae. It is native to Western Canada in British Columbia, and the Western United States, including from the Eastern Cascades and northeastern California to the Rocky Mountains.

https://en.wikipedia.org/wiki/Lomatium_grayi

Lomatium grayi

Lomatium suksdorfii is a herbaceous perennial in the Apiaceae family, notable for its deciduous foliage. It thrives in full sun, ideally in a south-facing, sheltered spot with moist but well-drained loam soil of neutral pH. Hardy to UK zone H3, this cultivar is suitable for wildlife gardens, cottage and informal gardens, as well as flower borders and beds. It offers seasonal interest in spring and summer. Cultivation involves planting in well-drained soil and watering during establishment, with propagation possible by seed or division.

Lomatium suksdorfii thrives in full sun, is RHS H3 hardy, and adds spring to summer interest in wildlife, cottage, and flower border gardens.