Distribution: Occurring east of the Cascades crest in Washington; Washington to western Montana.
Habitat: Montane to subalpine areas.
Origin: Native
Conservation Status: Not of concern
FNA2: " Larix lyallii and L. occidentalis (Larix sect. Multiseriales) are similar morphologically and have similar geographic ranges. Just how closely the two species are related has not been determined, but they probably originated from a common ancestor resembling L. potaninii Batalin. Although the geographic ranges of the two species overlap considerably, elevational differences of 150 to 300m usually separate them. Some morphologically intermediate specimens have been collected from Washington and Montana."
PNW Herbaria: Specimen records of Larix lyallii × Larix occidentalis in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Larix lyallii × Larix occidentalis checklist entry
OregonFlora: Larix lyallii × Larix occidentalis information
E-Flora BC: Larix lyallii × Larix occidentalis atlas page
CalPhotos: Larix lyallii × Larix occidentalis photos
