Distribution: Currently known only from Chelan County and thought to be endemic to there.
Habitat: Open, rocky slopes in Ponderosa pine forest.
Conservation Status: Not of concern
Lomatiumroneorum M.E. Darrach Publication: Darrach, M.E. 2018. Lomatium roneorum (Apiaceae), a new species from the east slopes of the Cascade Mountains, Washington state. Phytoneuron 2018-78: 1–12.
Published 5 November 2018. ISSN 2153 733X 2018.
PNW Herbaria: Specimen records of Lomatiumroneorum in the Consortium of Pacific Northwest Herbaria database.