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Sassafras

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This article is about the genus of trees. For the North American species of tree, see Sassafras albidum.
For other uses, see Sassafras (disambiguation).

Sassafras
Sassafras albidum,
Norfolk Botanical Garden
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Laurales
Family: Lauraceae
Genus: Sassafras
J.Presl[1]
Species

Sassafras albidum
†Sassafras ashleyi
†Sassafras columbiana
†Sassafras hesperia
Sassafras randaiense
Sassafras tzumu
†Sassafras yabei

Synonyms

Pseudosassafras Lecomte

Sassafras is a genus of three extant and one extinct species of deciduous trees in the family Lauraceae, native to eastern North America and eastern Asia.[2][3][4] The genus is distinguished by its aromatic properties, which have made the tree useful to humans.

Description

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Sassafras trees grow from 9–35 metres (30–115 feet) tall with many slender sympodial branches and smooth, orange-brown bark or yellow bark.[5] All parts of the plants are fragrant. The species are unusual in having three distinct leaf patterns on the same plant: unlobed oval, bilobed (mitten-shaped), and trilobed (three-pronged); the leaves are hardly ever five-lobed.[6] Three-lobed leaves are more common in Sassafras tzumu and S. randaiense than in their North American counterparts, although three-lobed leaves often occur on S. albidum. The young leaves and twigs are quite mucilaginous and produce a citrus-like scent when crushed. The tiny, yellow flowers are generally six-petaled; S. albidum and (the extinct) S. hesperia are dioecious, with male and female flowers on separate trees, while S. tzumu and S. randaiense have male and female flowers occurring on the same trees. The fruit is a drupe, blue-black when ripe.[2]

  • Pistillate (female) flowers
    Pistillate (female) flowers
  • Staminate (male) flowers
    Staminate (male) flowers

The largest known sassafras tree in the world is in Owensboro, Kentucky, and is over 30 m (100 ft) high and 6.4 m (21 ft) in circumference.[7][8]

Taxonomy

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The genus Sassafras was first described by the Bohemian botanist Jan Presl in 1825.[1] The name "sassafras", applied by the botanist Nicolas Monardes in 1569, comes from the French sassafras. Some sources claim it originates from the Latin saxifraga or saxifragus: "stone-breaking"; saxum "rock" + frangere "to break").[9][10] Sassafras trees are not within the family Saxifragaceae.[citation needed]

Early European colonists reported that the plant was called winauk by Native Americans in Delaware and Virginia and pauane by the Timucua. Native Americans distinguished between white sassafras and red sassafras, terms which referred to different parts of the same plant but with distinct colors and uses.[11] Sassafras was known as fennel wood (German Fenchelholz) due to its distinctive aroma.[12][clarification needed]

Species

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The genus Sassafras includes four species, three extant and one extinct. Sassafras plants are endemic to North America and East Asia, with two species in each region that are distinguished by some important characteristics, including the frequency of three-lobed leaves (more frequent in East Asian species) and aspects of their sexual reproduction (North American species being dioecious).[citation needed]

Taiwanese sassafras, Taiwan, is treated by some botanists in a distinct genus as Yushunia randaiensis (Hayata) Kamikoti, though this is not supported by recent genetic evidence, which shows Sassafras to be monophyletic.[4][13]

North America

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Fossil Sassafras hesperia leaf from Early Ypresian, Klondike Mountain Formation, Washington, USA

East Asia

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Distribution and habitat

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Many Lauraceae are aromatic, evergreen trees or shrubs adapted to high rainfall and humidity, but the genus Sassafras is deciduous. Deciduous sassafras trees lose all of their leaves for part of the year, depending on variations in rainfall.[15] In deciduous tropical Lauraceae, leaf loss coincides with the dry season in tropical, subtropical and arid regions.

Sassafras is commonly found in open woods, along fences, or in fields. It grows well in moist, well-drained, or sandy loam soils and tolerates a variety of soil types, attaining a maximum in southern and wetter areas of distribution.[16]

Sassafras albidum ranges from southern Maine and southern Ontario west to Iowa, and south to central Florida and eastern Texas, in North America. S. tzumu may be found in Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Sichuan, Yunnan, and Zhejiang, China.[17] S. randaiense is native to Taiwan.[18]

Ecology

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S. albidum is a host plant for the spicebush swallowtail.[19]

The leaves, bark, twigs, stems, and fruits are eaten by birds and mammals in small quantities. For most animals, sassafras is not consumed in large enough quantities to be important, although it is an important deer food in some areas. Carey and Gill rate its value to wildlife as fair, their lowest rating. Sassafras leaves and twigs are consumed by white-tailed deer and porcupines. Other sassafras leaf browsers include groundhogs, marsh rabbits, and American black bears. Rabbits eat sassafras bark in winter. American beavers will cut sassafras stems. Sassafras fruits are eaten by many species of birds, including bobwhite quail, eastern kingbirds, great crested flycatchers, phoebes, wild turkeys, gray catbirds, northern flickers, pileated woodpeckers, downy woodpeckers, thrushes, vireos, and northern mockingbirds. Some small mammals also consume sassafras fruits.[20]

Toxicity

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Sassafras oil contains safrole, which may have a carcinogenic effect.[21][22]

Uses

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All parts of sassafras plants, including roots, stems, twig leaves, bark, flowers, and fruit, have been used for culinary, medicinal, and aromatic purposes, both in areas where they are endemic and in areas where they were imported, such as Europe. The wood of sassafras trees has been used as a material for building ships and furniture in China, Europe, and the United States, and sassafras played an important role in the history of the European colonization of the Americas in the 16th and 17th centuries. Sassafras twigs have been used as toothbrushes and fire starters.[16]

Culinary

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See Sassafras albidum § Culinary use for more information on culinary use specific to the extant North American species, and legislation in the United States restricting the use of products derived from sassafras.

Sassafras albidum is an important ingredient in some distinct foods of the US. It is the main ingredient in traditional root beer and sassafras root tea, and ground leaves of sassafras are a distinctive additive in Louisiana Cajun cuisine. It is used in filé powder, a common thickening and flavoring agent in gumbo. Methods of cooking with sassafras combine this ingredient native to America with traditional North American, as well as European, culinary techniques, to create a unique blend of Creole cuisine, and are thought by some to be heavily influenced by a blend of cultures.[23] Sassafras is no longer used in commercially produced root beer since sassafras oil was banned for use in commercially mass-produced foods and drugs by the US Food and Drug Administration in 1960 due to health concerns about the carcinogenicity of safrole, a major constituent of sassafras oil, in animal studies.[21][22]

Sassafras leaves and flowers have also been used in salads, and to flavor fats or cure meats.[24][25] The young twigs can also be eaten fresh or dried. Additionally, the subterranean portion of the plant can be peeled, dried and boiled to make tea.[26]

Traditional medicine

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Numerous Native American tribes used the leaves of sassafras to treat wounds by rubbing the leaves directly into a wound and used different parts of the plant for many medicinal purposes such as treating acne, urinary disorders, and sicknesses that increased body temperature, such as high fevers.[27] East Asian types of sassafras such as S. tzumu (chu mu) and S. randaiense (chu shu) are used in Chinese medicine to treat rheumatism and trauma.[28] Some modern researchers conclude that the oil, roots and bark of sassafras have analgesic and antiseptic properties. Different parts of the sassafras plant (including the leaves and stems, the bark, and the roots) have been used to treat scurvy, skin sores, kidney problems, toothaches, rheumatism, swelling, menstrual disorders, sexually transmitted diseases, bronchitis, hypertension, and dysentery. It is also used as a fungicide, dentifrice, rubefacient, diaphoretic, perfume, carminative and sudorific.[29] Before the twentieth century, Sassafras enjoyed a great reputation in the medical literature, but became valued for its power to improve the flavor of other medicines.[30]

Sassafras root was an early export from North America, as early as 1609.[31]

Sassafras wood and oil were both used in dentistry. Early toothbrushes were crafted from sassafras twigs or wood because of its aromatic properties.[16] Sassafras was also used as an early dental anesthetic and disinfectant.[32][33]

Wood

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Sassafras albidum is often grown as an ornamental tree for its unusual leaves and aromatic scent. Outside of its native area, it is occasionally cultivated in Europe and elsewhere.[34] The durable and beautiful wood of sassafras plants has been used in shipbuilding and furniture-making in North America, in Asia, and in Europe (once Europeans were introduced to the plant).[35] Sassafras wood was also used by Native Americans in the southeastern United States as a fire-starter because of the flammability of its natural oils found within the wood and the leaves.[36]

Oil and aroma

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Steam distillation of dried root bark produces an essential oil which has a high safrole content, as well as significant amounts of varying other chemicals such as camphor, eugenol (including 5-methoxyeugenol), asarone, and various sesquiterpenes. Many other trees contain similarly high percentages and their extracted oils are sometimes referred to as sassafras oil,[37] which once was extensively used as a fragrance in perfumes and soaps, food and for aromatherapy. Safrole is a precursor for the clandestine manufacture of the drugs MDA and MDMA, and as such, sales and import of sassafras oil (as a safrole-containing mixture of above-threshold concentration) are heavily restricted in the US.[38]

Sassafras oil has also been used as a natural insect or pest deterrent, and in liqueurs (such as the opium-based Godfrey's Cordial), and in homemade liquor to mask strong or unpleasant smells.[16][24] Sassafras oil has also been added to soap and other toiletries.[32] It is banned in the United States for use in commercially mass-produced foods and drugs by the FDA as a potential carcinogen.[21]

Commercial use

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For a more detailed description of uses by indigenous peoples of North America, and a history of the commercial use of Sassafras albidum by Europeans in the United States in the 16th and 17th centuries, see the article on the extant North American species of sassafras, Sassafras albidum.

In modern times, the sassafras plant has been grown and harvested for the extraction of sassafras oil. It is used in a variety of commercial products or their syntheses, such as the insecticide synergistic compound piperonyl butoxide.[39] These plants are primarily harvested for commercial purposes in Asia and Brazil.[40]

References

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  1. ^ a b "Sassafras". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 2017-11-30.
  2. ^ a b van der Werff, Henk (1997). "Sassafras". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 3. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  3. ^ a b Wolfe, Jack A. & Wehr, Wesley C. 1987. The sassafras is an ornamental tree. "Middle Eocene Dicotyledonous Plants from Republic, Northeastern Washington". United States Geological Survey Bulletin 1597:13
  4. ^ a b Nie, Z.-L.; Wen, J.; Sun, H. (2007). "Phylogeny and biogeography of Sassafras (Lauraceae) disjunction between eastern Asia and eastern North America". Plant Systematics and Evolution. 267 (1–4): 191–203. Bibcode:2007PSyEv.267..191N. CiteSeerX 10.1.1.669.8487. doi:10.1007/s00606-007-0550-1. S2CID 44051126.
  5. ^ Dirr, Michael (2009). Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses (6th ed.). Stipes Publishing. p. 938. ISBN 9781588748706.
  6. ^ Noble Plant Image Gallery Sassafras (includes photo of five-lobed leaf)
  7. ^ "Sassafras albidum" (PDF). Kentucky Cooperative Extension Service. Archived (PDF) from the original on 2012-10-12. Retrieved 2009-06-15.
  8. ^ Bronaugh, Whit (May–June 1994). "The biggest sassafras". American Forests. Archived from the original on 2012-07-09. Retrieved 2009-06-15.
  9. ^ John Carter Brown Library (1570). Bibliotheca Americana: Catalogue of the John Carter Brown Library in Brown University, Providence, Rhode Island, Volume 1, Part 2. Providence, RI: The Library. pp. 246, 267, 346. Archived from the original on 2015-05-18. Retrieved 2014-12-09.
  10. ^ Webster's Revised Unabridged Dictionary (1913 ed.). 1913. pp. 1277–1280. Archived from the original on 2014-12-10. Retrieved 2014-12-09.
  11. ^ Austin, Daviel (November 29, 2004). Florida Ethnobotany. CRC Press. p. 606. ISBN 978-0-8493-2332-4.
  12. ^ Weaver, William (December 19, 2000). Sauer's Herbal Cures: America's First Book of Botanic Healing, 1762–1778. Routledge. p. 274. ISBN 978-0-415-92360-6.
  13. ^ Kamikoti, S. (1933). Ann. Rep. Taihoku Bot. Gard. 3: 78
  14. ^ Griggs, Margene M. (1990). "Sassafras albidum". In Burns, Russell M.; Honkala, Barbara H. (eds.). Hardwoods. Silvics of North America. Vol. 2. Washington, D.C.: United States Forest Service (USFS), United States Department of Agriculture (USDA) – via Southern Research Station.
  15. ^ Pallardy, Stephen G.; Kozlowski, T. T. (2010). Physiology of woody plants (3rd ed.). Amsterdam: Elsevier. p. 75. ISBN 9780080568713. OCLC 228148187.
  16. ^ a b c d Small, Ernest (September 23, 2013). North American Cornucopia: Top 100 Indigenous Food Plants. CRC Press. pp. 603–606. ISBN 978-1-4665-8592-8.
  17. ^ Wiersema, John; León, Blanca (February 26, 1999). World Economic Plants: A Standard Reference. CRC Press. p. 616. ISBN 978-0-8493-2119-1.
  18. ^ Nie, Z.-L.; Wen, J.; Sun, H. (2007). "Phylogeny and biogeography of Sassafras (Lauraceae) disjunct between eastern Asia and eastern North America". Plant Systematics and Evolution. 267 (1–4): 0378–2697. Bibcode:2007PSyEv.267..191N. CiteSeerX 10.1.1.669.8487. doi:10.1007/s00606-007-0550-1. S2CID 44051126.
  19. ^ Capinera, John L., ed. (2008). "Butterfly gardening". Encyclopedia of Entomology (2 ed.). Springer Science & Business Media. p. 683. ISBN 9781402062421.
  20. ^ This section incorporates text from a public domain work of the US government: Sullivan, Janet (1993). "Sassafras albidum". Fire Effects Information System (FEIS). US Department of Agriculture (USDA), Forest Service (USFS), Rocky Mountain Research Station, Fire Sciences Laboratory.
  21. ^ a b c Dietz, B; Bolton, Jl (Apr 2007). "Botanical dietary supplements gone bad". Chemical Research in Toxicology. 20 (4): 586–90. doi:10.1021/tx7000527. ISSN 0893-228X. PMC 2504026. PMID 17362034.
  22. ^ a b Safrole: Human Health Effects. Toxnet: Toxicology Data Network. https://toxnet.nlm.nih.gov/cgi-bin/sis/search/a?dbs+hsdb:@term+@DOCNO+2653 Archived 2017-10-29 at the Wayback Machine
  23. ^ Nobles, Cynthia Lejeune (2009), "Gumbo", in Tucker, Susan; Starr, S. Frederick (eds.), New Orleans Cuisine: Fourteen Signature Dishes and Their Histories, University Press of Mississippi, p. 110, ISBN 978-1-60473-127-9
  24. ^ a b Duke, James (September 27, 2002). CRC Handbook of Medicinal Spices. CRC Press. p. 274. ISBN 978-0-8493-1279-3.
  25. ^ Weatherford, Jack (September 15, 1992). Native Roots: How the Indians Enriched America. Ballantine Books. p. 52. ISBN 978-0-449-90713-9.
  26. ^ United States Department of the Army (2009). "Sassaras". The Complete Guide to Edible Wild Plants. New York: Skyhorse Publishing. p. 89. ISBN 978-1-60239-692-0. OCLC 277203364.
  27. ^ Duke, James (December 15, 2000). The Green Pharmacy Herbal Handbook: Your Comprehensive Reference to the Best Herbs for Healing. Rodale Books. p. 195. ISBN 978-1-57954-184-2.
  28. ^ Wikibooks:Traditional Chinese Medicine/From Sabal Peregrina To Syzygium Samarangense
  29. ^ Tiffany Leptuck, "Medical Attributes of 'Sassafras albidum' – Sassafras"], Kenneth M. Klemow, Ph.D., Wilkes-Barre University, 2003
  30. ^ Keeler, H. L. (1900). Our Native Trees and How to Identify Them. Charles Scribner's Sons, New York.
  31. ^ Lyle, Katie Letcher (2010) [2004]. The Complete Guide to Edible Wild Plants, Mushrooms, Fruits, and Nuts: How to Find, Identify, and Cook Them (2nd ed.). Guilford, CN: FalconGuides. p. 155. ISBN 978-1-59921-887-8. OCLC 560560606.
  32. ^ a b Barceloux, Donald (March 7, 2012). Medical Toxicology of Natural Substances: Foods, Fungi, Medicinal Herbs, Plants, and Venomous Animals. Wiley. ASIN B007KGA15Q.
  33. ^ Dental Protective Association of the United States (June 7, 2010). Dental Digest. Vol. 6. Nabu Press. p. 546. ISBN 978-1-149-86231-5.
  34. ^ U.S. Forest Service: Sassafras albidum (pdf file) Archived October 4, 2012, at the Wayback Machine
  35. ^ De-Yuan, Hong (June 30, 2015). Plants of China: A Companion to the Flora of China. Cambridge University Press. p. 313. ISBN 978-1-107-07017-2.
  36. ^ Bartram, William (December 1, 2002). William Bartram on the Southeastern Indians (Indians of the Southeast). University of Nebraska Press. p. 270. ISBN 978-0-8032-6205-8.
  37. ^ Abel, G. (1997). "Safrole – Sassafras Albidum". Adverse Effects of Herbal Drugs. Vol. 3. Springer Berlin Heidelberg. pp. 123–127. doi:10.1007/978-3-642-60367-9_11. ISBN 978-3-540-60181-4.
  38. ^ Code of Federal Regulations (Title 21, Article § 1310.04). January 27, 2012. pp. a.h.1, f.1.i. Archived from the original on April 17, 2016. Retrieved 2016-05-18. ... the threshold is determined by the weight of the listed chemical in the chemical mixture
  39. ^ Metcalf, Robert L. (2002). "Insect Control", Ullmann’s Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a14_263
  40. ^ Blickman, Tom (February 3, 2009). "Harvesting Trees". Transnational Institute. Archived from the original on April 11, 2015. Retrieved April 4, 2015.
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