Juniperus osteosperma

(Torrey) Little

Leafl. W. Bot. 5: 125. 1948.

Common names: Utah juniper sabina morena
Endemic
Basionyms: Juniperus tetragona var. osteosperma Torrey Pacif. Railr. Rep. 4(5): 141. 1857
Synonyms: Juniperus californica var. utahensis Engelmann Sabina osteosperma (Torrey) Antoine Sabina utahensis (Engelmann) Rydberg
Treatment appears in FNA Volume 2.

Shrubs or trees monoecious, to 6 (–12) m, multi or single-stemmed; crown rounded. Bark exfoliating in thin gray-brown strips, that of smaller and larger branchlets smooth. Branches spreading to ascending; branchlets erect, 3–4-sided in cross-section, about as wide as length of scalelike leaves. Leaves light yellow-green, abaxial glands inconspicuous and embedded, exudate absent, margins denticulate (at 20×); whip leaves 3–5 mm, glaucous adaxially; scalelike leaves 1–2 mm, not overlapping, or, if so, by less than 1/10 their length, keeled, apex rounded, acute or occasionally obtuse, appressed. Seed-cones maturing in 1–2 years, of 1–2 sizes, with straight peduncles, globose, (6–) 8–9 (–12) mm, bluish brown, often almost tan beneath glaucous coating, fibrous, with 1 (–2) seeds. Seeds 4–5 mm.


Habitat: Dry, rocky soil and slopes
Elevation: 1300–2600 m

Distribution

V2 109-distribution-map.gif

Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Utah, Wyo.

Discussion

Juniperus osteosperma is the dominant juniper of Utah. It is reported to hybridize with J. occidentalis in northwestern Nevada (F. C. Vasek 1966).

Selected References

None.

Lower Taxa

None.

... more about "Juniperus osteosperma"
elongate +  and hemispheric +
Obtuse (?) +, Acute (?) +  and Rounded (?) +
Robert P. Adams +
(Torrey) Little +
long-lived +
exfoliating +
Juniperus tetragona var. osteosperma +
spreading;ascending +
angled +  and terete +
inconspicuous +  and undifferentiated +
Utah juniper +  and sabina morena +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
rounded +
Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Utah +  and Wyo. +
1300–2600 m +
Dry, rocky soil and slopes +
decurrent +  and scale-like +
petioled +, sessile +, twisted +  and simple +
not overlapping +
light yellow-green +
persisting +
3 (?) +  and 5 (?) +
keeled +  and scale-like +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
denticulate +
spheric;oblong +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Leafl. W. Bot. +
fibrous;woody +
peltate +  and complex +
cuneate +  and oblong +
fleshy +  and woody +
overlapping +
persistent +
coalesced +
fibrous +  and obscurely woody +
1 +  and 2 +
round +  and faceted +
flattened +
Juniperus californica var. utahensis +, Sabina osteosperma +  and Sabina utahensis +
Juniperus osteosperma +
Juniperus sect. Sabina +
species +
flattened +, angled +  and terete +
tree +  and shrub +
upright +  and decumbent +
asymmetric +  and symmetric +