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Juniperus macrocarpa

From Wikipedia, the free encyclopedia
Species of conifer

Juniperus macrocarpa
Juniperus macrocarpa in sand dune habitat, Paros Island, Greece
Scientific classificationEdit this classification
Kingdom:Plantae
Clade:Tracheophytes
Clade:Gymnospermae
Division:Pinophyta
Class:Pinopsida
Order:Cupressales
Family:Cupressaceae
Genus:Juniperus
Section:Juniperussect. Juniperus
Species:
J. macrocarpa
Binomial name
Juniperus macrocarpa

Juniperus macrocarpa (large-fruited juniper, syn.J. oxycedrus subsp.macrocarpa (Sibth. & Sm.) Ball) is a species ofjuniper, native across the northernMediterranean Region from southwesternSpain[2] east to westernTurkey andCyprus, growing oncoastalsand dunes from sea level up to 75 metres (246 feet) in altitude.[3][4] A single, isolated tree is found further west, in a cliff in southernPortugal.[5]

Foliage and immature cones, Paros Island, Greece

It is a spreadingshrub 2–5 m (6+1216+12 ft) tall, rarely a smalltree up to 14 m (46 ft) tall. Theleaves are broad lanceolate, produced in whorls of three, green,12–20 millimetres (1234 in) long and 2–3 mm broad, with a double whitestomatal band split by a green midrib on the inner surface. It isdioecious, with separate male and female plants. Theseed cones areberry-like, green ripening in 18 months to orange-red with a variable pink waxy coating; they are spherical, 12–18 mm diameter, and have six fused scales in two whorls, three of the scales with a singleseed. The seeds are dispersed whenbirds eat the cones, digesting the fleshy scales and passing the hard seeds in their droppings. Thepollen cones are yellow, 2–3 mm long, and fall soon after shedding their pollen in late winter.[3][4][6]

Despite its distinct morphology with large cones and broad leaves more like those ofJuniperus drupacea, it has often been treated as asubspecies ofJuniperus oxycedrus,[4] though recent genetic studies[3][7][8] have shown itsDNA is distinct from that ofJ. oxycedrus.

References

[edit]
  1. ^Farjon, A. (2013)."Juniperus macrocarpa".IUCN Red List of Threatened Species.2013 e.T16348745A16348765.doi:10.2305/IUCN.UK.2013-1.RLTS.T16348745A16348765.en. Retrieved27 January 2024.
  2. ^Muñoz-Reinoso, José Carlos (6 May 2004). "Diversity of maritime juniper woodlands".Forest Ecology and Management.192 (2–3):267–276.Bibcode:2004ForEM.192..267M.doi:10.1016/j.foreco.2004.01.039.
  3. ^abcAdams, R. P. (2004).Junipers of the World. Trafford.ISBN 1-4120-4250-X
  4. ^abcFarjon, A. (2005).Monograph of Cupressaceae and Sciadopitys. Royal Botanic Gardens, Kew.ISBN 1-84246-068-4
  5. ^Sánchez-Gullon, E.; Javier Nieva, F.; Muñoz Rodríguez, A.F. (2015)."El enebro costero, novedad para Portugal".Conservación Vegetal.19: 4.
  6. ^Arboretum de Villardebelle:photos of cones and shoots
  7. ^Adams, R. P. (2000). Systematics ofJuniperus sectionJuniperus based on leaf essential oils and RAPD DNA fingerprinting.Biochem. Syst. Ecol. 28: 515-528.available online (pdf file)Archived 2011-07-21 at theWayback Machine
  8. ^Adams, R. P., Morris, J. A., Pandey, R. N., & Schwarzbach, A. E. (2005). Cryptic speciation betweenJuniperus deltoides andJ. oxycedrus (Cupressaceae) in the Mediterranean.Biochem. Syst. Ecol. 33: 771-787.available online (pdf file)

Media related toJuniperus macrocarpa at Wikimedia Commons

Juniperus macrocarpa
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