Description[edit]

Elaeagnus angustifolia is a thorny tree growing to 35 feet (11 metres) in height.[6] Its stems, buds, and leaves have a dense covering of silvery to rusty scales. The leaves are alternate, lanceolate, 4–9 centimetres (1+1⁄2–3+1⁄2 inches) long and 1–2.5 cm (3⁄8–1 in) broad, with a smooth margin. The plants begin to flower and fruit from 3 years old. The highly aromatic flowers, produced in clusters of one to three, are 1 cm long with a four-lobed creamy yellow calyx; they appear in early summer and are followed by clusters of fruit, a small cherry-like drupe 1–1.7 cm (3⁄8–5⁄8 in) long, orange-red covered in silvery scales. The fruits are about 1 cm wide[7] and sweet, though with a dryish, mealy texture.[8][9][10]

The species is established and reproduced primarily by seed, with some vegetative propagation also occurring.[11] The branches have thorns that can be 2–7 cm (3⁄4–2+3⁄4 in) long.

  • Foliage

    Foliage

    •  
  • Microscopic view of leaf scales, which give them a silvery sheen

    Microscopic view of leaf scales, which give them a silvery sheen

    •  
  • Fruit

    Fruit

Taxonomy[edit]

The species was described as Zizyphus cappadocica by John Gerard, and was grown by John Parkinson by 1633.[12] Its common name comes from its similarity in appearance to the olive (Olea europaea), in a different botanical family, the Oleaceae.

Ecology[edit]

Russian olive invading a rare ciénega in New Mexico, United States

The shrub can fix nitrogen in its roots,[13] enabling it to grow on bare mineral substrates.

The caterpillars of the high altitude alpine moth Lachana alpherakii use it as a host plant.[14] The fruit is readily eaten and the seeds disseminated by many species of birds.

Invasive behavior[edit]

The species was introduced into North America by the late 19th century, and was both planted and spread through the consumption of its fruits (which seldom ripen in England),[15] by birds, which disperse the seeds.[11] Russian olive is considered to be an invasive species in many places in the United States because it thrives on poor soil, has high seedling survival rates, matures in a few years, and out-competes the native vegetation. It often invades riparian habitats where the canopy of cottonwood trees has died. Its quick-spreading root system can make it pest-like.

Uses[edit]

A colorful bowl of mixed dried fruits viewed from directly above, sitting on a flowered cloth
Dried oleaster fruit (senjed) among other fruits as part of haft mēwa, an Afghan dish

It is widely grown across southern and central Europe as a drought and cold-resistant ornamental plant for its scented flowers, edible fruit,[7] attractive yellow foliage and black bark.[11]

In Iran, the dried powder of the fruit is used mixed with milk for rheumatoid arthritis and joint pains. There is evidence supporting beneficial effects of aqueous extract of Persian olive in reducing the symptoms of osteoarthritis with an efficacy comparable to that of acetaminophen and ibuprofen.[16]

It is one of the seven items used in Haft-sin, a traditional table setting of Nowruz, the traditional Persian spring celebration. The dried fruit, known locally as senjed, is one of seven served in its own syrup in a fruit salad called haft mēwa eaten during Nowruz in Afghanistan.[17][18]

References[edit]

  1. ^ "Russian Olive Species Profile". USDA. Retrieved 2016-01-10.
  2. ^ Jump up to:a b c Bailey, L.H.; Bailey, E.Z.; the staff of the Liberty Hyde Bailey Hortorium (1976). Hortus third: A concise dictionary of plants cultivated in the United States and Canada. New York: Macmillan. ISBN 978-0-02-505470-7.
  3. ^ "Travel Tales – of Wild fruits and Pink Lotuses | Spinning a Yarn of L…". Archived from the original on 2021-06-05.
  4. ^ Sullivan, Steven. K. (2020). "Elaeagnus angustifolia". Wildflower Search. Retrieved 2020-09-22.
  5. ^ USDA, NRCS. (2020). "Elaeagnus angustifolia". The PLANTS Database. National Plant Data Team, Greensboro, NC 27401-4901 USA. Retrieved 2020-09-22.
  6. ^ "USDA Plants Database".
  7. ^ Jump up to:a b Arno, Stephen F.; Hammerly, Ramona P. (2020) [1977]. Northwest Trees: Identifying & Understanding the Region's Native Trees (field guide ed.). Seattle: Mountaineers Books. pp. 287–288. ISBN 978-1-68051-329-5. OCLC 1141235469.
  8. ^ Klinkenberg, Brian, ed. (2020). "Elaeagnus angustifolia". E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. Retrieved 2020-09-22.
  9. ^ Giblin, David, ed. (2020). "Elaeagnus angustifolia". WTU Herbarium Image Collection. Burke Museum, University of Washington. Retrieved 2020-09-22.
  10. ^ "Elaeagnus angustifolia". in Jepson Flora Project (eds.) Jepson eFlora. Jepson Herbarium; University of California, Berkeley. 2020. Retrieved 2020-09-22.
  11. ^ Jump up to:a b c Little, Elbert L. (1994) [1980]. The Audubon Society Field Guide to North American Trees: Western Region (Chanticleer Press ed.). Knopf. p. 566. ISBN 0-394-50761-4.
  12. ^ Alice M. Coats, Garden Shrubs and Their Histories (1964) 1992, s.v. "Eleagnus".
  13. ^ "Forest Service Fire Ecology". Archived from the original on 2008-04-05. Retrieved 2008-01-15.
  14. ^ Trofimova, Tatyana A. (January 2008). "Systematic notes on Dasorgyia Staudinger, 1881, Dicallomera Butler, 1881, and Lachana Moore, 1888 (Lymantriidae)" (PDF). Nota Lepidopterologica. 31 (2): 273–291. ISSN 0342-7536. Archived from the original (PDF) on 23 April 2012. Retrieved 26 November 2019.
  15. ^ Parkinson noted that it rarely perfected its fruit (noted by Coats 1992).
  16. ^ Panahi, Y.; Alishiri, G. H.; Bayat, N.; Hosseini, S. M.; Sahebkar, A. (2016). "Efficacy of Elaeagnus Angustifolia extract in the treatment of knee osteoarthritis: A randomized controlled trial". Excli Journal. 15: 203–210. PMC 4908661. PMID 27330526.
  17. ^ Sethi, Simran (2022-03-21). "Nowruz is banned in Afghanistan, but families continue to celebrate". NPR. Retrieved 2022-04-29.
  18. ^ Deravian, Naz (2022-03-14). "For Afghans Abroad, Nowruz Is a Chance to Reflect". The New York Times. ISSN 0362-4331. Retrieved 2022-04-29.

External links[edit]

Wikimedia Commons has media related to Elaeagnus angustifolia.