Difference between revisions of "Juniperus scopulorum"
Gard. & Forest 10: 420, fig. 54. 1897.
Common names: Rocky Mountain juniper Rocky Mountain redcedar
Synonyms: Sabina scopulorum (Sargent) Rydberg
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Trees </b>dioecious, to 20 m, single-stemmed (rarely multistemmed); crown conic to occasionally rounded. <b>Bark</b> brown, exfoliating in thin strips, that of small branchlets (5–10 mm diam.) smooth, that of larger branchlets exfoliating in plates. <b>Branches</b> spreading to ascending; branchlets erect to flaccid, 3–4-sided in cross section, ca. 2/3 or less as wide as length of scalelike leaves. <b>Leaves</b> light to dark green but often glaucous blue or blue-gray, abaxial gland elliptic, conspicuous, exudate absent, margins entire (at 20× and 40×); whip leaves 3–6 mm, not glaucous adaxially; scalelike leaves 1–3 mm, not overlapping to overlapping by not more than 1/5 their length, keeled to rounded, apex obtuse to acute, appressed or spreading. <b>Seed</b> cones maturing in 2 years, of 2 distinct sizes, generally with straight peduncles, globose to 2-lobed, 6–9 mm, appearing light blue when heavily glaucous, but dark blue-black beneath glaucous coating when mature (or tan beneath glaucous coating when immature), resinous to fibrous, with (1–)2(–3) seeds. <b>Seeds</b> 4–5 mm. <b>2n</b> = 22.</span><!-- |
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|publication year=1897 | |publication year=1897 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_47.xml |
|genus=Juniperus | |genus=Juniperus | ||
|section=Juniperus sect. Sabina | |section=Juniperus sect. Sabina | ||
|species=Juniperus scopulorum | |species=Juniperus scopulorum | ||
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-->[[Category:Treatment]][[Category:Juniperus sect. Sabina]] | -->[[Category:Treatment]][[Category:Juniperus sect. Sabina]] | ||
Revision as of 14:21, 27 July 2019
Trees dioecious, to 20 m, single-stemmed (rarely multistemmed); crown conic to occasionally rounded. Bark brown, exfoliating in thin strips, that of small branchlets (5–10 mm diam.) smooth, that of larger branchlets exfoliating in plates. Branches spreading to ascending; branchlets erect to flaccid, 3–4-sided in cross section, ca. 2/3 or less as wide as length of scalelike leaves. Leaves light to dark green but often glaucous blue or blue-gray, abaxial gland elliptic, conspicuous, exudate absent, margins entire (at 20× and 40×); whip leaves 3–6 mm, not glaucous adaxially; scalelike leaves 1–3 mm, not overlapping to overlapping by not more than 1/5 their length, keeled to rounded, apex obtuse to acute, appressed or spreading. Seed cones maturing in 2 years, of 2 distinct sizes, generally with straight peduncles, globose to 2-lobed, 6–9 mm, appearing light blue when heavily glaucous, but dark blue-black beneath glaucous coating when mature (or tan beneath glaucous coating when immature), resinous to fibrous, with (1–)2(–3) seeds. Seeds 4–5 mm. 2n = 22.
Habitat: Rocky soils, slopes, and eroded hillsides
Elevation: 1200–2700 m (0 m at Vancouver Island and Puget Sound)
Distribution
Alta., B.C., Ariz., Colo., Idaho, Mont., Nebr., Nev., N.Mex., N.Dak., Oreg., S.Dak., Utah, Wash., Wyo., n Mexico.
Discussion
Juniperus scopulorum hybridizes with its eastern relative J. virginiana in zones of contact in the Missouri River basin (C. W. Comer et al. 1982) and with J. horizontalis (J. × fassettii Boivin; N. C. Fassett 1945). Relictual hybridization with J. virginiana is known in the Texas panhandle (R. P. Adams 1983).
Selected References
None.
Lower Taxa
None.