Juniperus osteosperma

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Template:Short description

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Scientific classification Edit this classification
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Binomial name
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(Torr.) Little, 1948
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Natural range
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Synonyms[1]
List
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Juniperus osteosperma (Utah juniper; syn. J. utahensis) is a shrub or small tree native to the southwestern United States.

Description

The plant reaches 3–6 meters (9 ft 10 in – 19 ft 8 in), rarely to 9 m, tall. The shoots[which?] are fairly thick compared to most junipers, Page Template:Fraction/styles.css has no content.1.5–2 millimetres (1⁄16–3⁄32 in) in diameter. The leaves are arranged in opposite decussate pairs[4] or whorls of three; the adult leaves are scale-like, 1–2 mm long (to 5 mm on lead shoots) and 1–1.5 mm broad. The juvenile leaves (on young seedlings only) are needle-like, Page Template:Fraction/styles.css has no content.5–10 mm (3⁄16–13⁄32 in) long. The cones are berry-like, Page Template:Fraction/styles.css has no content.8–13 mm (5⁄16–1⁄2 in) in diameter, blue-brown with a whitish waxy bloom, and contain a single seed (rarely two); they mature in about 18 months and are eaten by birds and small mammals.[5] The male cones are 2–4 mm long, and shed their pollen in early spring. It is mostly monoecious with both sexes on the same plant, but around 10% of plants are dioecious, producing cones of only one sex.

The plants frequently bear numerous galls caused by the juniper tip midge Oligotrophus betheli (Bibionomorpha: Cecidomyiidae); these are conspicuous pale violet-purple, produced in clusters of 5–20 together, each gall Page Template:Fraction/styles.css has no content.1–2 centimetres (3⁄8–3⁄4 in) in diameter, with dense modified spreading scale-leaves Page Template:Fraction/styles.css has no content.6–10 mm (1⁄4–3⁄8 in) long and 2–3 mm broad at the base.

  • J. osteosperma leaves, female and male cones
    J. osteosperma leaves, female and male cones
  • Utah Juniper galls
    Utah Juniper galls
  • Seedling in northeastern Nevada
    Seedling in northeastern Nevada
  • Juniperus osteosperma on the northwest shore of Stansbury Island
    Juniperus osteosperma on the northwest shore of Stansbury Island

Distribution and habitat

The species is native to the southwestern United States, in Utah, Nevada, Arizona, western New Mexico, western Colorado, Wyoming, southern Montana, southern Idaho and eastern California. It grows at moderate altitudes of 1,300–2,600 m (4,300–8,500 ft), on dry soils, often together with Pinus monophylla.

Ecology

Seeds are dispersed by a variety of mammals and birds. Mammals include jackrabbits (mostly the black-tailed jackrabbit Lepus californicus spp.) rodents and to a lesser extent by coyotes (Canis latrans).[6] Most notable among the birds that disperse juniper berries is the Townsend's solitaire (Myadestes townsendi).[7]

Uses

Native Americans such as the Havasupai used the bark for a variety of purposes, including beds, and ate the cones both fresh and in cakes.[8] The Havasupai used the gum to make a protective covering over wounds. Additionally, the Yavapai gave their women a tea made from the leaves to calm their contractions after giving birth, and fumigated them with smoke from the leaves placed over hot coals. The Navajo sweep their tracks with boughs from the trees so death will not follow them.[9]

A small quantity of ripe berries can be eaten as an emergency food or as a sage-like seasoning for meat. The dried berries can be roasted and ground into a coffee substitute.[10]

Utah juniper is an aromatic plant. Essential oil extracted from the trunk and limb is prominent in α-pinene, δ-3-carene, and cis-thujopsene. Essential oil extracted from the leaf is prominent in camphor and bornyl acetate.[11] The trunk of Utah juniper retains essential oil for at least 20 years after the tree dies, and is prominent in cedrol and cis-thujopsene.[12]

See also

References

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  1. ^ Template:Cite POWO
  2. ^ Template:Cite iucn
  3. ^ Page Module:Citation/CS1/styles.css has no content.NatureServe (2024). "Juniperus osteosperma". Arlington, Virginia. Retrieved 5 September 2024.
  4. ^ Page Module:Citation/CS1/styles.css has no content.Arno, Stephen F.; Hammerly, Ramona P. (2020) [1977]. Northwest Trees: Identifying & Understanding the Region's Native Trees (field guide ed.). Seattle: Mountaineers Books. p. 177. ISBN 978-1-68051-329-5. OCLC 1141235469.
  5. ^ Page Module:Citation/CS1/styles.css has no content.Little, Elbert L. (1994) [1980]. The Audubon Society Field Guide to North American Trees: Western Region (Chanticleer Press ed.). Knopf. p. 317. ISBN 0-394-50761-4.
  6. ^ Page Module:Citation/CS1/styles.css has no content.Chambers, Jeanne C.; Vander Wall, Stephen B.; Schupp, Eugene W. (January 1999). "Seed and seedling ecology of piñon and juniper species in the pygmy woodlands of western North America". The Botanical Review. 65 (1): 1–38. Bibcode:1999BotRv..65....1C. doi:10.1007/bf02856556. ISSN 0006-8101. S2CID 38377131.
  7. ^ Page Module:Citation/CS1/styles.css has no content.Poddar, Saradell; Lederer, Roger J. (July 1982). "Juniper Berries as an Exclusive Winter Forage for Townsend's Solitaires". American Midland Naturalist. 108 (1): 34. doi:10.2307/2425289. ISSN 0003-0031. JSTOR 2425289.
  8. ^ Page Module:Citation/CS1/styles.css has no content.Whitney, Stephen (1985). Western Forests (The Audubon Society Nature Guides). New York: Knopf. p. 371. ISBN 0-394-73127-1.
  9. ^ Page Module:Citation/CS1/styles.css has no content.Peattie, Donald Culross (1953). A Natural History of Western Trees. New York: Bonanza Books. pp. 265–66.
  10. ^ Page Module:Citation/CS1/styles.css has no content.Elias, Thomas S.; Dykeman, Peter A. (2009) [1982]. Edible Wild Plants: A North American Field Guide to Over 200 Natural Foods. New York: Sterling. pp. 194, 197. ISBN 978-1-4027-6715-9. OCLC 244766414.
  11. ^ Page Module:Citation/CS1/styles.css has no content.Wilson TM, Poulson A, Packer C, Marshall J, Carlson RE, Buch RM. "Essential oils of whole tree, trunk, limbs and leaves of Juniperus osteosperma from Utah". Phytologia. 101 (3): 188–193.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  12. ^ Page Module:Citation/CS1/styles.css has no content.Wilson T.M., Poulson A., Packer C., Carlson R.E., Davis R., Dey M.G., Owen N.M., Smalley S.W., Dodge R., Zahn G., Baadsgaard A., Stevens M.T. (December 22, 2021). "Essential oil, insect, and microbe relationships in Juniperus osteosperma (Cupressaceae) trees killed by wildfire" (PDF). Phytologia. 103 (4): 106–118.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  • R.P. Adams. Junipers of the World: The genus Juniperus. Trafford Publishing Template:ISBN

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