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Pinyon pine

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Pinyon pines
Single-leaf pinyon (Pinus monophyllasubsp.monophylla)
Scientific classificationEdit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order: Pinales
Family: Pinaceae
Genus: Pinus
Subgenus: P.subg.Strobus
Section: P.sect.Parrya
Subsection: P.subsect.Cembroides
Engelm.[1]
Species

See text.

Thepinyonorpiñonpinegroup grows in southwestern North America, especially inNew Mexico,Colorado, Arizona, and Utah. The trees yield ediblenuts,which are a staple food ofNative Americans,and widely eaten as asnackand as an ingredient inNew Mexican cuisine.The name comes from the Spanishpino piñonero,a name used for both the American varieties and thestone pinecommon in Spain, which also produces edible nuts typical ofMediterranean cuisine.Harvesting techniques of the prehistoric American Indians are still used today to collect the pinyon seeds for personal use or for commercialization. The pinyon nut or seed is high in fats and calories. In the western United States, pinyon pines are often found inpinyon–juniper woodlands.

Pinyon wood, especially when burned, has a distinctive fragrance, making it a common wood to burn inchimeneas.[2]Pinyon pine trees are also known to influence the soil in which they grow by increasing concentrations of both macronutrients and micronutrients.[3]

Some of the species are known to hybridize, the most notable ones beingP. quadrifoliawithP. monophylla,andP. eduliswithP. monophylla.

The two-needle piñon (Pinus edulis) is the officialstate treeofNew Mexico.

Evolutionary history[edit]

The evolutionary origins of the piñons appear to coincide with theLaramide Orogeny.[4]

Species[edit]

Range of the two-needle piñon, one of the two most important species in the United States
Range of the three subspecies of the single-leaf pinyon
A single-leaf pinyon from Mono County, California. The short stature and rounded crown are typical of the pinyon.
A forest of two-needle piñons in Grand Canyon National Park, Arizona

Genetic differentiation in the pinyon pine has been observed associated to insect herbivory and environmental stress.[5][6]There are eight species of true pinyon (PinussubsectionCembroides):[7]

These additional Mexican species are also related, and mostly called pinyons:

The threebristlecone pinespecies of the high mountains of the southwestern United States, and thelacebark pinesof Asia are closely related to the pinyon pines.[citation needed]

Piñon seeds in Native American cuisine[edit]

The seeds of the pinyon pine, known as "pine nuts"or" piñóns ", are an important food forAmerican Indiansliving in the mountains of theNorth American Southwest.All species ofpineproduce edible seeds, but in North America only pinyon produces seeds large enough to be a major source of food.[8]

The pinyon has likely been a source of food since the arrival ofHomo sapiensin theGreat Basinand American Southwest (Oasisamerica). In the Great Basin, archaeological evidence indicates that the range of the pinyon pine expanded northward after theIce Age,reaching its northernmost (and present) limit in southern Idaho about 4000 BCE.[9]Early Native Americans undoubtedly collected the edible seeds, but, at least in some areas, evidence of large quantities of pinyon nut harvesting does not appear until about 600 CE. Increased use of pinyon nuts was possibly related to a population increase of humans and a decline in the number of game animals, thereby forcing the Great Basin inhabitants to seek additional sources of food.[10]

The suitability of pinyon seeds as astaple foodis reduced because of the unreliability of the harvest. Abundant crops of cones and seeds occur only every two to seven years, averaging a good crop every four years. Years of high production of seed tend to be the same over wide areas of the pinyon range.[11]

Traditional method of harvesting[edit]

In 1878, naturalistJohn Muirdescribed the Indian method of harvesting pinyon seeds in Nevada. In September and October, the harvesters knocked the cones off the pinyon trees with poles, stacked the cones into a pile, put brushwood on top, lit it, and lightly scorched the pinyon cones with fire. The scorching burned off the sticky resin coating the cones and loosened the seeds. The cones were then dried in the sun until the seeds could be easily extracted. Muir said the Indians closely watched the pinyon trees year-round and could predict the scarcity or abundance of the crop months before harvest time.[12]In 1891, B. H. Dutcher observed the harvesting of pinyon seeds by the Panamint Indians (Timbishapeople) in thePanamint RangeoverlookingDeath Valley,California. The harvesting method was similar to that observed by Muir in Nevada, except that the pinyon seeds were extracted immediately after the cones had been scorched in the brushwood fire.[13]

Both the above accounts described a method of extracting the seeds from the green cones. Another method is to leave the cones on the trees until they are dry and brown, then beat the cones with a stick, knocking the cones loose or the seeds loose from the cones which then fall to the ground where they can be collected.[14]The nomadic hunter-gathering people of the Great Basin usually consumed their pinyon seeds during the winter following harvest; the agriculturalPueblo peopleof theRio Grandevalley ofNew Mexicocould store them for two or three years in pits.[15]

Each pinyon cone produces 10 to 30 seeds and a productive stand of pinyon trees in a good year can produce 250 pounds (110 kg) on 1 acre (0.40 ha) of land. An average worker can collect about 22 pounds (10.0 kg) of unshelled pinyon seed in a day's work. Production per worker of 22 pounds of unshelled pinyon seeds—more than one-half that in shelled seeds—amounts to nearly 30,000 calories of nutrition. That is a high yield for the effort expended by hunter-gatherers. Moreover, the pinyon seeds are high in fat, often in short supply for hunter-gatherers.[16]

Relationship with wildlife[edit]

Ips confusustrapped in a glob of sap formed by a pitch tube as a defense mechanism by the pinyon pine

Thepinyon jay(Gymnorhinus cyanocephalus) takes its name from the tree, and pinyon nuts form an important part of its diet. It is very important for regeneration of pinyon woods, as it stores large numbers of the seeds in the ground for later use, and excess seeds not used are in an ideal position to grow into new trees. TheMexican jayis also important for the dispersal of some pinyon species, as, less often, is theClark's nutcracker.Many other species of animal also eat pinyon nuts, without dispersing them.

Ips confusus,known as the pinyon ips, is a bark beetle that kills weak or damaged pinyon pine trees. The beetles feed on the xylem and phloem of the trees. As a defense, the trees flood the holes produced by the beetles with sap.[17]

References[edit]

  1. ^Gernandt, D. S.; López, G. G.; García, S. O.; Liston, A. (2005)."Phylogeny and classification ofPinus".Taxon.54(1): 42.doi:10.2307/25065300.JSTOR25065300.
  2. ^"Chiminea Woods: Pinon, Apple, and Hickory—Oh My!".Archived fromthe originalon 2014-02-24.
  3. ^Barth, R.C. (January 1980)."Influence of Pinyon Pine Trees on Soil Chemical and Physical Properties".Soil Science Society of America Journal.44(1): 112–114.Bibcode:1980SSASJ..44..112B.doi:10.2136/sssaj1980.03615995004400010023x.Retrieved6 August2012.
  4. ^Malusa, J. (March 1992). "Phylogeny and biogeography of the pinyon pines (Pinus subsect. Cembroides)".Systematic Botany.7(1): 42–66.doi:10.2307/2419064.JSTOR2419064.
  5. ^Whitham, Thomas G.; Mopper, Susan (1985-05-31). "Chronic Herbivory: Impacts on Architecture and Sex Expression of Pinyon Pine".Science.228(4703): 1089–1091.Bibcode:1985Sci...228.1089W.doi:10.1126/science.228.4703.1089.PMID17737904.S2CID19048182.
  6. ^Mopper, Susan; Mitton, Jeffry B.; Whitham, Thomas G.; Cobb, Neil S.; Christensen, Kerry M. (June 1991). "Genetic Differentiation and Heterozygosity in Pinyon Pine Associated with Resistance to Herbivory and Environmental Stress".Evolution.45(4): 989–999.doi:10.2307/2409704.JSTOR2409704.PMID28564059.
  7. ^Bentancourt, Julio L.; Schuster, William S.; Mitton, Jeffry B.; Anderson, R. Scott (October 1991). "Fossil and Genetic History of a Pinyon Pine (Pinus Edulis) Isolate".Ecology.72(5): 1685–1697.Bibcode:1991Ecol...72.1685B.doi:10.2307/1940968.JSTOR1940968.
  8. ^"Piñon Nuts: The Manna of the Mountains".Mother Earth News.Retrieved29 July2015.
  9. ^Simms, Steven R. (1985)."Pine Nut Use in Three Great Basin Cases: Data, Theory, and a Fragmentary Material Record".Journal of California and Great Basin Anthropology.7(2): 166–167.JSTOR27825234.
  10. ^Hildebrandt, William R.; Ruby, Allika (2006)."Prehistoric Pinyon Exploitation in the Southwestern Great Basin: A View from the Coso Range".Journal of California and Great Basin Anthropology.26(1): 11–32.JSTOR27825820.
  11. ^Jeffers, Richard M."Piñon PIne Seed Production, Collection, and Storage"(PDF).United States Forest Service.Retrieved30 July2015.
  12. ^Rhode, David (1988)."Two Nineteenth-Century Reports of Great Basin Subsistence Practices".Journal of California and Great Basin Anthropology.10(2): 156–157.JSTOR27825342.
  13. ^Dutcher, B.H. (October 1893). "Piñon Gathering among the Panamint Indians".American Anthropologist.6(4): 377–380.doi:10.1525/aa.1893.6.4.02a00040.JSTOR658889.
  14. ^"Singleleaf Pinyon", USDA/NRCS,http://plants.usda.gov/plantguide/pdf/cs_pimo.pdf,accessed 30 Jul 2015
  15. ^"Indian Use of Pinyon-Juniper Woodlands"http://mojavedesert.net/plant-use/pinyon-juniper.html,accessed 30 Jul 2015
  16. ^Jeffers, pp. 195–196; "Piñon nuts, roasted (Navajo)",http://nutritiondata.self /facts/ethnic-foods/10473/2,accessed 30 July 2015
  17. ^Greene, David."Cool Bug Facts: The Pinyon and The Engraver (U.S. National Park Service)".nps.gov.National Park Service.Retrieved18 February2024.

External links[edit]