Distribution: Known from a single collection west of the Cascades crest in western Skamania County in Washington; Mount Hood in northern Oregon to northwestern California.
Habitat: Generally on ultramafic, serpentine, or volcanic rocks.
Cones: June-August
Origin: Native
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Juniperus communis var. jackii in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Juniperus communis var. jackii checklist entry
OregonFlora: Juniperus communis var. jackii information
E-Flora BC: Juniperus communis var. jackii atlas page
CalPhotos: Juniperus communis var. jackii photos