Common Juniper: Juniperus communis var. saxatilis
Jack's Juniper: Juniperus communis var. jackii (Synonym: Juniperus communis var. montana, in part, Juniperus jackii) - Awl-like leaf 5-10 mm long; green stomatal band about 3-4 times as wide as green marginal bands. Equivalent of var. montana in Oregon.
Common Juniper, Dwarf Juniper, Prostrate Juniper, Ground Juniper: Juniperus communis var. saxatilis (Synonyms: Juniperus communis var. alpina, Juniperus communis var. sibirica, Juniperus sibirica) - Awl-like leaf 5-10 mm long; green stomatal band about 2 times as wide as green marginal bands.
Western Juniper: Juniperus occidentalis var. occidentalis (Synonyms: Juniperus californica var. siskiyouensis, Sabina occidentalis) -
Rocky Mountain Juniper, Rocky Mountain Redcedar: Juniperus scopulorum (Synonyms: Juniperus scopulorum var. columnaris, Juniperus virginiana ssp. scopulorum, Juniperus virginiana var. montana, Juniperus virginiana var. scopulorum, Sabina scopulorum) - Possibly in the western foothills of the Cascade Mts. of southwestern Oregon?