Stone pine

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Stone pine
Pinus pinea Wellington Botanic Gardens.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order: Pinales
Family: Pinaceae
Genus: Pinus
Subgenus: P. subg. Pinus
Section: P. sect. Pinus
Subsection: Pinus subsect. Pinaster
Species:
P. pinea
Binomial name
Pinus pinea
L.
Pinus pinea range.svg
Distribution map

The stone pine, botanical name Pinus pinea, also known as the Italian stone pine, Mediterranean stone pine, umbrella pine and parasol pine, is a tree from the pine family ( Pinaceae ). The tree is native to the Mediterranean region, occurring in Southern Europe and the Levant. The species was introduced into North Africa millennia ago, and is also naturalized in the Canary Islands, South Africa and New South Wales.

Contents

Stone pines have been used and cultivated for their edible pine nuts since prehistoric times. They are widespread in horticultural cultivation as ornamental trees, planted in gardens and parks around the world. This plant has gained the Royal Horticultural Society's Award of Garden Merit. [2]

Pinus pinea is a diagnostic species of the vegetation class Pinetea halepensis. [3]

Distribution

The prehistoric range of Pinus pinea included North Africa in the Sahara Desert and Maghreb regions during a more humid climate period, in present-day Morocco, Algeria, Tunisia, and Libya. Its contemporary natural range is in the Mediterranean forests, woodlands, and scrub biome ecoregions and countries, including the following:

Southern Europe
Pinus pinea, Donana National Park (Andalusia, Spain) Pinus pinea Donana 1.jpg
Pinus pinea, Doñana National Park (Andalusia, Spain)

The Iberian conifer forests ecoregion of the Iberian Peninsula in Spain and Portugal; the Italian sclerophyllous and semideciduous forests ecoregion in France and Italy; the Tyrrhenian-Adriatic sclerophyllous and mixed forests ecoregion of southern Italy, Sicily, and Sardinia; the Illyrian deciduous forests of the eastern coast of the Ionian and Adriatic Seas in Croatia and Albania; the Crimean Submediterranean forest complex ecoregion on Krasnodar Krai (Russia) and the Crimea Peninsula; and the Aegean and Western Turkey sclerophyllous and mixed forests ecoregion of the southern Balkan Peninsula in Greece. In many parts of northern Italy, large parks with pine trees were laid out by the sea. Examples are the Pineta of Jesolo and Barcola, the Urban Beach of Trieste.

In Greece, although the species is not widely distributed, [4] an extensive stone pine forest exists in western Peloponnese at Strofylia [5] on the peninsula separating the Kalogria Lagoon from the Mediterranean Sea. This coastal forest is at least 13 kilometres (8 miles) long, with dense and tall stands of Pinus pinea mixed with Pinus halepensis . [6] Currently, Pinus halepensis is outcompeting stone pines in many locations of the forest. [7] Another location in Greece is at Koukounaries on the northern Aegean island of Skiathos at the southwest corner of the island. This is a half-mile-long dense stand of stone and Aleppo pines that lies between a lagoon and the Aegean Sea. [8]

Western Asia

In Western Asia, the Eastern Mediterranean conifer-sclerophyllous-broadleaf forests ecoregion in Turkey; and the Southern Anatolian montane conifer and deciduous forests ecoregion in Turkey, Syria, Lebanon, Israel and in the Palestinian Territories.

Northern Africa

The Mediterranean woodlands and forests ecoregion of North Africa, in Morocco and Algeria.

South Africa

In the Western Cape Province, the pines were according to legend planted by the French Huguenot refugees who settled at the Cape of Good Hope during the late 17th century and who brought the seeds with them from France. The tree is known in the Afrikaans language as kroonden.

Description

Stone pine in Brissago, on Lake Maggiore Umbrella Pine.jpg
Stone pine in Brissago, on Lake Maggiore

The stone pine is a coniferous evergreen tree that can exceed 25 metres (80 feet) in height, but 12–20 m (40–65 ft) is more typical. In youth, it is a bushy globe, in mid-age an umbrella canopy on a thick trunk, and, in maturity, a broad and flat crown over 8 m (26 ft) in width. [2] The bark is thick, red-brown and deeply fissured into broad vertical plates.

Foliage

The flexible mid-green leaves are needle-like, in bundles of two, and are 10–20 cm (4–8 in) long (exceptionally up to 30 cm or 12 in). Young trees up to 5–10 years old bear juvenile leaves, which are very different, single (not paired), 2–4 cm (341+12 in) long, glaucous blue-green; the adult leaves appear mixed with juvenile leaves from the fourth or fifth year on, replacing it fully by around the tenth year. Juvenile leaves are also produced in regrowth following injury, such as a broken shoot, on older trees.

Cone Pinus pinea - cone - Flickr - S. Rae.jpg
Cone

The cones are broad, ovoid, 8–15 cm (3–6 in) long, and take 36 months to mature, longer than any other pine. The seeds (pine nuts, piñones, pinhões, pinoli, or pignons) are large, 2 cm (34 in) long, and pale brown with a powdery black coating that rubs off easily, and have a rudimentary 4–8 mm (532516 in) wing that falls off very easily. The wing is ineffective for wind dispersal, and the seeds are animal-dispersed, originally mainly by the Iberian magpie, but in recent history largely by humans.

Use

Food

Pinus pinea has been cultivated extensively for at least 6,000 years for its edible pine nuts, which have been trade items since early historic times. The tree has been cultivated throughout the Mediterranean region for so long that it has naturalized, and is often considered native beyond its natural range.

Ornamental

Pines on Via Appia Antica Appia Antica way.jpg
Pines on Via Appia Antica

The tree is among the current symbols of Rome. [9] It was first planted in Rome during the Roman Republic, where many historic Roman roads, such as the Via Appia, were (and still are) embellished with lines of stone pines. Stone pines were planted on the hills of the Bosphorus strait in Istanbul for ornamental purposes during the Ottoman period. In Italy, the stone pine has been an aesthetic landscape element since the Italian Renaissance garden period. In the 1700s, P. pinea began being introduced as an ornamental tree to other Mediterranean climate regions of the world, and is now often found in gardens and parks in South Africa, California, and Australia. It has naturalized beyond cities in South Africa to the extent that it is listed as an invasive species there. It is also planted in western Europe up to southern Scotland, and on the East Coast of the United States up to New Jersey.

In the United Kingdom it has won the Royal Horticultural Society's Award of Garden Merit. [10] [11]

Small specimens are used for bonsai, and also grown in large pots and planters. The year-old seedlings are seasonally available as table-top Christmas trees 20–30 cm (8–12 in) tall.

Other

Other products of economic value include resin, bark for tannin extraction, and empty pine cone shells for fuel. Pinus pinea is also currently widely cultivated around the Mediterranean for environmental protection such as consolidation of coastal dunes, soil conservation and protection of coastal agricultural crops. [12]

Pests

The introduced western conifer seed beetle (Leptoglossus occidentalis) was accidentally imported with timber to northern Italy in the late 1990s from western USA, and has spread across Europe as an invasive pest species since then. It feeds on the sap of developing conifer cones throughout its life, and its sap-sucking causes the developing seeds to wither and misdevelop. It has destroyed most of the pine nut seeds in Italy, threatening P. pinea in its native habitats there. [13]

Pestalotiopsis pini (a genus of ascomycete fungi), was found as an emerging pathogen on Pinus pinea in Portugal. Evidence of shoot blight and stem necrosis were found in stone pine orchards and urban areas in 2020. The edible pine nut production has been decreasing in the affected area due to several factors, including pests and diseases. The fungus was found on needles, shoots and trunks of Pinus pinea and also on Pinus pinaster . Pestalotiopsis fungal species could represent a threat to the health of pine forests in the Mediterranean basin. [14]

Related Research Articles

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<i>Pinus nigra</i> Species of conifer

Pinus nigra, the Austrian pine or black pine, is a moderately variable species of pine, occurring across Southern Europe from the Iberian Peninsula to the eastern Mediterranean, on the Anatolian peninsula of Turkey, Corsica and Cyprus, as well as Crimea and in the high mountains of Northwest Africa.

<i>Pinus canariensis</i> Species of conifer in the family Pinaceae

Pinus canariensis, the Canary Island pine, is a species of gymnosperm in the conifer family Pinaceae. It is a large, evergreen tree, native and endemic to the outer Canary Islands of the Atlantic Ocean.

<span class="mw-page-title-main">Coulter pine</span> Pine tree found in North America

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<i>Pinus brutia</i> Species of conifer

Pinus brutia, commonly known as the Turkish pine and Calabrian pine, is a species of pine native to the eastern Mediterranean region. The bulk of its range is in Turkey, but certain varieties are naturalized as far east as Afghanistan. It is also known as East Mediterranean pine, Afghan pine, and Brutia pine. The name "Calabrian pine" comes from an introduced grove in the Calabria region of southern Italy; historically this region was called Bruttium, which is likely where the specific epithet "brutia" comes from. Pinus brutia bears many similarities with other, closely related species such as Pinus halepensis and Pinus canariensis. Turkish pine forms a species complex with the former.

<i>Pinus halepensis</i> Species of conifer

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<i>Pinus pinaster</i> Species of plant

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<span class="mw-page-title-main">Lone Pine (tree)</span>

The Lone Pine was a solitary tree on the Gallipoli Peninsula in Turkey, which marked the site of the Battle of Lone Pine in August 1915. It was a Turkish or East Mediterranean pine.

<span class="mw-page-title-main">Eastern Mediterranean conifer–sclerophyllous–broadleaf forests</span> Ecoregion in the Eastern Mediterranean Basin

The Eastern Mediterranean conifer-sclerophyllous-forests, also known as the Eastern Mediterranean conifer-forests, is an ecoregion in the eastern Mediterranean Basin. It covers portions of Turkey, Syria, Iraq, Lebanon, Israel, Palestinian territories, Jordan, and Saudi Arabia.

<span class="mw-page-title-main">Illyrian deciduous forests</span> Terrestrial ecoregion of Europe

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<span class="mw-page-title-main">Italian sclerophyllous and semi-deciduous forests</span> Ecoregion in Italy

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<span class="mw-page-title-main">South Apennine mixed montane forests</span> Ecoregion in Italy

The South Apennine mixed montane forests is an ecoregion in the southern Apennine Mountains of southern Italy and Sicily. It has a Mediterranean climate, and is in the Mediterranean forests, woodlands, and scrub biome.

<span class="mw-page-title-main">Tyrrhenian–Adriatic sclerophyllous and mixed forests</span> Ecoregion in Southern Europe

The Tyrrhenian-Adriatic sclerophyllous and mixed forests is an ecoregion in southern Italy, Sicily, Sardinia, Corsica, the Dalmatian Islands of Croatia, and Malta.

<span class="mw-page-title-main">Mediterranean forests, woodlands, and scrub</span> Habitat defined by the World Wide Fund for Nature

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<span class="mw-page-title-main">Aegean and Western Turkey sclerophyllous and mixed forests</span> Ecoregion in Greece, Turkey, and North Macedonia

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<span class="mw-page-title-main">Southwest Iberian Mediterranean sclerophyllous and mixed forests</span>

The Southwest Iberian Mediterranean sclerophyllous and mixed forests is a Mediterranean forests, woodlands, and scrub ecoregion in southwestern Europe. It occupies the southwestern Iberian Peninsula, encompassing coastal lowlands and mountains in portions of Portugal and Spain.

<span class="mw-page-title-main">Iberian sclerophyllous and semi-deciduous forests</span>

The Iberian sclerophyllous and semi-deciduous forests is a Mediterranean forests, woodlands, and scrub ecoregion in southwestern Europe. It occupies the interior valleys and plateaus of the Iberian Peninsula. The ecoregion lies mostly in Spain, and includes some portions of eastern Portugal.

<span class="mw-page-title-main">Northwest Iberian montane forests</span>

The Northwest Iberian montane forests is a Mediterranean forests, woodlands, and scrub ecoregion in southwestern Europe. It lies in the northwestern Iberian Peninsula, includes inland mountains, foothills, and plateaus in northwestern Spain and northeastern Portugal.

<span class="mw-page-title-main">Iberian conifer forests</span>

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<span class="mw-page-title-main">Alps conifer and mixed forests</span> Ecoregion in Central Europe

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References

  1. Farjon, A. (2013). "Pinus pinea". IUCN Red List of Threatened Species . 2013: e.T42391A2977175. doi: 10.2305/IUCN.UK.2013-1.RLTS.T42391A2977175.en . Retrieved 6 September 2021.
  2. 1 2 "Pinus pinea". Royal Horticultural Society. Retrieved 23 July 2013.[ permanent dead link ]
  3. Bonari, Gianmaria; Fernández-González, Federico; Çoban, Süleyman; Monteiro-Henriques, Tiago; Bergmeier, Erwin; Didukh, Yakiv P.; Xystrakis, Fotios; Angiolini, Claudia; Chytrý, Kryštof; Acosta, Alicia T.R.; Agrillo, Emiliano (January 2021). Ewald, Jörg (ed.). "Classification of the Mediterranean lowland to submontane pine forest vegetation". Applied Vegetation Science. 24 (1). Bibcode:2021AppVS..24E2544B. doi:10.1111/avsc.12544. hdl: 10400.5/21923 . ISSN   1402-2001. S2CID   228839165.
  4. Earle, Christopher J. "Pinus pinea". The Gymnosperm database. Retrieved 23 July 2013.
  5. "Strofylia – Greece". F:ACTS!. Archived from the original on 31 March 2012. Retrieved 23 July 2013.
  6. "GR098 Kalogria lagoon, Strofilia forest, and Lamia marshes". Hellenic Ornithological Society. Retrieved 23 July 2013.
  7. Ganatsas, Petros. "Pinus halepensis invasion in Pinus pinea habitat" (PDF). Journal for Nature Conservation. Elsevier. Retrieved 23 July 2013.
  8. "NatureBank – Βιότοπος NATURA – SKIATHOS: KOUKOUNARIES KAI EVRYTERI THALASSIA PERIOCHI". filotis.itia.ntua.gr.
  9. Povoledo, Elisabetta (13 August 2023). "Rome's Iconic Umbrella Pines Imperiled by Pests and the Ax". The New York Times. Retrieved 14 August 2023.
  10. "RHS Plantfinder - Pinus pinea" . Retrieved 30 April 2018.
  11. "AGM Plants – Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 71. Retrieved 25 April 2018.
  12. Fady, B.; Finesch, S. & Vendramin, G. (2004), Italian stone pine − Pinus pinea: Technical guidelines for genetic conservation and use (PDF), European Forest Genetic Resources Programme, archived from the original (PDF) on 18 January 2017, retrieved 18 January 2017
  13. PR (20 October 2010). "Italy's pine nut pest". Public Radio International. Archived from the original on 13 August 2011. Retrieved 20 June 2012.
  14. Silva, Ana Cristina; Diogo, Eugénio; Henriques, Joana; Ramos, Ana Paula; Sandoval-Denis, Marcelo; Crous, Pedro W.; Bragança, Helena (2020). "Pestalotiopsis pini sp. nov., an Emerging Pathogen on Stone Pine (Pinus pinea L.)". Forests. 11 (8): 805. doi: 10.3390/f11080805 . hdl: 10400.5/20420 .