Juniperus communis var. montana

Aiton

Hort. Kew. 3: 414. 1789. 1789

Endemic
Synonyms: Juniperus communis subsp. alpina (Smith) Celakovsky Juniperus communis subsp. nana (Willdenow) Syme Juniperus communis var. jackii Rehder Juniperus communis var. saxatilis Pallas Juniperus sibirica
Treatment appears in FNA Volume 2.

Shrubs spreading to matlike, 0.5–1 m. Leaves upturned or upcurled, to 15 × 2 mm, linear-lanceolate, sometimes almost overlapping, glaucous stomatal band on adaxial leaf surface 2 or more times width of each green marginal band, apex acute to obtuse and mucronate. Seed cones 6–9 mm, shorter than leaves. 2n = 22.


Habitat: Dry rocky soil and rock crevices on slopes and summits
Elevation: 0–2500 m

Distribution

Greenland, B.C., Calif., Oreg., Wash.

Discussion

Juniperus communis var. montana is widespread throughout the Northern Hemisphere. Although the proposed var. jackii is quite distinct in the field (prostrate shrub with sparsely branched, whiplike, trailing branches), transplants indicate that the unusual growth form is environmentally induced (Steve Edwards, pers. comm.).

Selected References

None.

Lower Taxa

None.

Robert P. Adams +
Greenland +, B.C. +, Calif. +, Oreg. +  and Wash. +
0–2500 m +
Dry rocky soil and rock crevices on slopes and summits +
Juniperus communis subsp. alpina +, Juniperus communis subsp. nana +, Juniperus communis var. jackii +, Juniperus communis var. saxatilis +  and Juniperus sibirica +
Juniperus communis var. montana +
Juniperus communis +
variety +