Juniperus communis

Juniperus communis
Juniperus communis subsp. communis
in the Netherlands

Secure  (NatureServe)[2]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order: Cupressales
Family: Cupressaceae
Genus: Juniperus
Section: Juniperus sect. Juniperus
Subsection: Juniperus subsect. Juniperus
Species:
J. communis
Binomial name
Juniperus communis
Natural range worldwide
Natural range in North America

Juniperus communis, the common juniper, is a species of small tree or shrub in the cypress family Cupressaceae. An evergreen conifer, it has the largest geographical range of any woody plant, with a circumpolar distribution throughout the cool temperate Northern Hemisphere.

Description

Juniperus communis is highly variable in form, ranging from 10 metres (33 feet)—rarely 16 m (52 ft)—tall to a low, often prostrate spreading shrub in exposed locations. It has needle-like leaves in whorls of three; the leaves are green, with a single white stomatal band on the inner surface. It never attains the scale-like adult foliage of other members of the genus.[3]: 55  It is dioecious, with male and female cones on separate plants so requiring wind pollination to transfer pollen from male to female cones. Male trees or shrubs naturally live longer than female trees or shrubs; a male tree or shrub can live more than 2000 years.[4][5][6][7]

The male cones are yellow, 2–3 millimetres (3⁄32–1⁄8 in) long, and fall soon after shedding their pollen in March–April. The fruit are berry-like cones known as juniper berries. They are initially green, ripening in 18 months to purple-black with a blue waxy coating; they are spherical, 4–12 mm (5⁄32–15⁄32 in) diameter, and usually have three (occasionally six) fleshy fused scales, each scale with a single seed. The seeds are dispersed when birds eat the cones, digesting the fleshy scales and passing the hard, unwinged seeds in their droppings.[8][9][10]

Chemistry

The juniper berry oil is composed largely of monoterpene hydrocarbons such as α-pinene, myrcene, sabinene, limonene and β-pinene.[11]

Subspecies

Prostrate specimens of J. communis subsp. alpina, in Vitosha, Bulgaria

As to be expected from its wide range, J. communis is highly variable, with several infraspecific taxa; delimitation between the taxa is still uncertain, with genetic data not matching morphological data well.[8][9][10][12][13][14][15]

  • subsp. communis – Common juniper. Usually an erect shrub or small tree; leaves 8–27 mm (5⁄16–1+1⁄16 in) long; cones small, 5–8 mm, usually shorter than the leaves; found at low to moderate altitude in temperate climates
    • subsp. communis var. communis – Europe, most of northern Asia
    • subsp. communis var. depressa Pursh – North America, Sierra Nevada in California
    • subsp. communis var. hemisphaerica (J.Presl & C.Presl) Parl. – Mediterranean mountains
    • subsp. communis var. nipponica (Maxim.) E.H.Wilson – Japan (status uncertain, often treated as J. rigida var. nipponica)
  • subsp. alpina (Suter) Čelak. – alpine juniper (syn. J. c. subsp. nana, J. c. var. saxatilis Pallas, J. sibirica Burgsd.). Usually a prostrate ground-hugging shrub; leaves short, 3–8 mm; cones often larger, 7–12 mm, usually longer than the leaves; found in subarctic areas and high altitude alpine zones in temperate areas
    • subsp. alpina var. alpina – Greenland, Europe and Asia
    • subsp. alpina var. megistocarpa Fernald & H.St.John – Eastern Canada (doubtfully distinct from var. alpina)
    • subsp. alpina var. jackii Rehder – Western North America (doubtfully distinct from var. alpina)

Some botanists treat subsp. alpina at the lower rank of variety, in which case the correct name is J. communis var. saxatilis Pallas,[9] though the name J. communis var. montana is also occasionally cited; others, primarily in eastern Europe and Russia, sometimes treat it as a distinct species J. sibirica Burgsd. (syn. J. nana Willd., J. alpina S.F.Gray).[16]

Distribution and habitat

The species has the largest geographical range of any woody plant, with a circumpolar distribution throughout the cool temperate Northern Hemisphere from the Arctic south in mountains to around 30°N latitude in North America, Europe and Asia.[17] Relict populations can be found in the Atlas Mountains of Africa.[17]

J. communis is one of Ireland's longest established plants.[18]

Cultivation

Teardrop-shaped J. communis in Hvaler, Norway

Juniperus communis is cultivated in the horticulture trade and used as an evergreen ornamental shrub in gardens. The following cultivars gained the Royal Horticultural Society's Award of Garden Merit in 1993:[19]

  • Juniperus communis 'Compressa'[20]
  • Juniperus communis 'Green Carpet'[21] (prostrate shrub)
  • Juniperus communis 'Hibernica' (Irish juniper)[22]
  • Juniperus communis 'Repanda'[23] (prostrate shrub)

Other cultivars in use include:

  • Juniperus communis 'Fontän'
  • Juniperus communis 'Green Carpet'
  • Juniperus communis 'Hornibrookii'
  • Juniperus communis 'Kantarell'
  • Juniperus communis 'Repanda' [24]
  • Juniperus communis 'Vemboö' [25]

Uses

Crafts

J. communis wood pieces, with a U.S. penny for scale, showing the narrow growth rings of the species

It is too small to have any general lumber usage. In Scandinavia, however, juniper wood is used for making containers for storing small quantities of dairy products such as butter and cheese, and also for making wooden butter knives. It was also frequently used for trenails in wooden shipbuilding by shipwrights for its tough properties.

In Estonia juniper wood is valued for its long lasting and pleasant aroma, very decorative natural structure of wood (growth rings) as well as good physical properties of wood due to slow growth rate of juniper and resulting dense and strong wood. Various decorative items (often eating utensils) are common in most Estonian handicraft shops and households.

According to the old tradition, on Easter Monday Kashubian (Northern Poland) boys chase girls whipping their legs gently with juniper twigs. This is to bring good fortune in love to the chased girls.

Juniper wood, especially burl wood, is frequently used to make knife handles for French pocketknives such as the Laguiole.

Culinary

Further information: Juniper berry

Its astringent blue-black seed cones, commonly known as juniper berries, are too bitter to eat raw and are usually sold dried and used to flavour meats, sauces, and stuffings. They are generally crushed before use to release their flavour. Since juniper berries have a strong taste, they should be used sparingly. They are generally used to enhance meat with a strong flavour, such as game, including game birds, or tongue.

The cones are used to flavour certain beers and gin (the word "gin" derives from an Old French word meaning "juniper").[26] In Finland, juniper is used as a key ingredient in making sahti, a traditional Finnish ale. Also the Slovak alcoholic beverage Borovička and Dutch Jenever are flavoured with juniper berry or its extract.

Archaeological evidence suggests that the use of juniper in brewing may date back to at least the early medieval period. Juniper remains have been found at migration period and early Merovingian sites in southwestern Germany, indicating it may have been used to flavor beverages like beer as early as the 3rd to 6th centuries AD.[27]

Juniper is used in the traditional farmhouse ales of Norway,[28] Sweden,[29] Finland,[30] Estonia, and Latvia. In Norway, the beer is brewed with juniper infusion instead of water, while in the other countries the juniper twigs are mainly used as filters to prevent the crushed malts from clogging the outlet of the lauter tun. The use of juniper in farmhouse brewing has been common in much of northern Europe, seemingly for a very long time.[31]

Traditional medicine

Juniper berries have long been used as medicine by many cultures including the Navajo people.[32] Western American tribes combined the berries of J. communis with Berberis root bark in a herbal tea. Native Americans also used juniper berries as a female contraceptive.[33]

Medicine

Juniper leaves were found to harbor fungi with potent anti-fungal compounds,[34] including ibrexafungerp, which is now FDA approved to treat fungal infections.

References

  1. ^ Farjon, A. (2013). "Juniperus communis". IUCN Red List of Threatened Species. 2013: e.T42229A2963096. doi:10.2305/IUCN.UK.2013-1.RLTS.T42229A2963096.en. Retrieved 11 November 2021.
  2. ^ NatureServe (2024). "Juniperus communis". Arlington, Virginia. Retrieved 5 September 2024.
  3. ^ Stace, C. A. (2010). New Flora of the British Isles (Third ed.). Cambridge, U.K.: Cambridge University Press. ISBN 9780521707725.
  4. ^ Lena K. Ward,The Conservation of Juniper: Longevity and Old Age,Journal of Applied Ecology, Vol. 19, No. 3 (Dec., 1982), pp. 917-928
  5. ^ Lloyd, D.G. and C.J. Webb. 1977. Secondary sex characters in plants. The Botanical Review, 43: 177-216
  6. ^ Forsberg, G.E. 1888. Ueber die Geschlechterverteilung bei Juniperus communis. Bot. Zentralbl. 33, 91-92.
  7. ^ Molisch H, ed. (1929).Die Lebensdauer der Pflanzen.Verlag Gustav Fischer, Jena.
  8. ^ a b Rushforth, K. (1987). Conifers. Helm ISBN 0-7470-2801-X.
  9. ^ a b c Adams, R. P. (2004). Junipers of the World: The genus Juniperus. Victoria: Trafford. ISBN 1-4120-4250-X.
  10. ^ a b Arboretum de Villardebelle: Juniperus
  11. ^ Höferl, Martina; Stoilova, Ivanka; Schmidt, Erich; Wanner, Jürgen; Jirovetz, Leopold; Trifonova, Dora; Krastev, Lutsian; Krastanov, Albert (2014). "Chemical Composition and Antioxidant Properties of Juniper Berry (Juniperus communis L.) Essential Oil. Action of the Essential Oil on the Antioxidant Protection of Saccharomyces cerevisiae Model Organism". Antioxidants. 3 (1): 81–98. doi:10.3390/antiox3010081. PMC 4665443. PMID 26784665.
  12. ^ Flora Europaea: Juniperus communis
  13. ^ Adams, R. P., Pandey, R. N., Leverenz, J. W., Dignard, N., Hoegh, K., & Thorfinnsson, T. (2003). Pan-Arctic variation in Juniperus communis: Historical Biogeography based on DNA fingerprinting. Biochem. Syst. Ecol. 31: 181–192 pdf file Archived 17 December 2008 at the Wayback Machine.
  14. ^ Adams, R. P., & Pandey, R. N. (2003). Analysis of Juniperus communis and its varieties based on DNA fingerprinting. Biochem. Syst. Ecol. 31: 1271-1278. pdf file Archived 17 December 2008 at the Wayback Machine
  15. ^ Adams, R. P., & Nguyen, S. (2007). Post-Pleistocene geographic variation in Juniperus communis in North America. Phytologia 89 (1): 43–57. pdf file Archived 17 December 2008 at the Wayback Machine
  16. ^ Association Ecosystem (Russia): Juniperus sibirica
  17. ^ a b Bo Mossberg; Lennart Stenberg (2020). Nordens flora (in Danish) (Nye, udvidede og omarbejdede udgave ed.). Copenhagen: Gyldendal. ISBN 978-87-02-28916-9. OCLC 1158895781.
  18. ^ Preston, S. J.; Wilson, C.; Jennings, S.; Provan, J.; McDonald, R. A. (2007). "The status of Juniperus communis L. in Northern Ireland in 2005". Ir. Nat. J. 28: 372–378.
  19. ^ "AGM ornamentals". London: Royal Horticultural Society. 2015.
  20. ^ "Juniperus communis Compressa". London: Royal Horticultural Society. 2015.
  21. ^ "Juniperus communis Green Carpet". London: Royal Horticultural Society. 2015.
  22. ^ "Juniperus communis Hibernica". London: Royal Horticultural Society. 2015.
  23. ^ "Juniperus communis Repanda". London: Royal Horticultural Society. 2015.
  24. ^ "Juniperus communis Repanda". Heberg: Sveplant AB. 2024.
  25. ^ "Juniperus communis Vemboö". Alnarp: E-planta ekonomisk förening. 2024.
  26. ^ Shorter Oxford English dictionary (6th ed.). United Kingdom: Oxford University Press. 2007. p. 3804. ISBN 978-0199206872.
  27. ^ Rösch, M. (2008). New aspects of agriculture and diet of the early medieval period in central Europe: waterlogged plant material from sites in south-western Germany. Vegetation History and Archaeobotany, 17(1), 225-238.
  28. ^ Brewing and beer traditions in Norway: The social anthropological background of the brewing industry, Odd Nordland, Universitetsforlaget, 1969.
  29. ^ Gotlandsdricka: Traditionell kultur som regional identitetssymbol, Anders Salomonsson, Skrifter utg. av Etnologiska sallskapet i Lund, 1979, ISBN 917400106X .
  30. ^ Vom Halm zum Fass: Die volkstumlichen Alkoholarmen : Getreidegetranke in Finnland, Matti Räsänen, Kansatieteellinen arkisto, 1975.
  31. ^ "The juniper mystery".
  32. ^ McCabe, Melvina; Gohdes, Dorothy; Morgan, Frank; Eakin, Joanne; Sanders, Margaret; Schmitt, Cheryl (2005). "Herbal Therapies and Diabetes Among Navajo Indians". Diabetes Care. 28 (6): 1534–1535. doi:10.2337/diacare.28.6.1534-a. PMID 15920089.
  33. ^ Tilford, Gregory L. (1997). Edible and Medicinal Plants of the West. Mountain Press Publishing Company. ISBN 978-0-87842-359-0.
  34. ^ Peláez F, Cabello A, Platas G, Díez MT, González del Val A, Basilio A, Martán I, Vicente F, Bills GE, Giacobbe RA, Schwartz RE, Onish JC, Meinz MS, Abruzzo GK, Flattery AM, Kong L, Kurtz MB (2010). "The discovery of enfumafungin, a novel antifungal compound produced by an endophytic Hormonema species biological activity and taxonomy of the producing organisms". Syst Appl Microbiol. 23 (3): 333–343. doi:10.1016/s0723-2020(00)80062-4. PMID 11108011.

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