Biology:Witch-hazel

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Short description: Genus of plants

Witch-hazel
Hamamelis virginiana - Köhler–s Medizinal-Pflanzen-070.jpg
Hamamelis virginiana
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Saxifragales
Family: Hamamelidaceae
Subfamily: Hamamelidoideae
Tribe: Hamamelideae
A.DC.
Genus: Hamamelis
Gronov. ex L.
Type species
Hamamelis virginiana
L.

Witch-hazels or witch hazels (Hamamelis) are a genus of flowering plants in the family Hamamelidaceae, with three species in North America (H. ovalis,[1] H. virginiana, and H. vernalis), and one each in Japan (H. japonica) and China (H. mollis). The North American species are occasionally called winterbloom.[2][3]

Growth

The witch-hazels are deciduous shrubs or (rarely) small trees growing to 3 to 7.5 m tall, even more rarely to 12 m tall. The leaves are alternately arranged, oval, 5 to 15 cm long, and 2.5 to 10 cm wide, with a smooth or wavy margin. The genus name, Hamamelis, means "together with fruit", referring to the simultaneous occurrence of flowers with the maturing fruit from the previous year.[4] H. virginiana blooms in September–November while the other species bloom from January–March. Each flower has four slender strap-shaped petals 1 to 2 cm long, pale to dark yellow, orange, or red. The fruit is a two-part capsule 1 cm long, containing a single 0.6 cm glossy black seed in each of the two parts; the capsule splits explosively at maturity in the autumn about eight months after flowering, ejecting the seeds with sufficient force to fly for distances of up to 9 m, thus another alternative name "snapping hazel".[citation needed]

Etymology

The name witch in witch-hazel has its origins in Middle English wiche, from the Old English wice, meaning "pliant" or "bendable", and is not related to the word witch meaning a practitioner of magic.[5] Jacob George Strutt's 1822 book, Sylva Britannica attests that "Wych Hazel" was used in England as a synonym for wych elm, the entirely unrelated Ulmus glabra;[6] The use of the twigs as divining rods, just as hazel twigs were used in England, may also have,[citation needed] by folk etymology, influenced the "witch" part of the name.[3]

Species

Five species are recognized:[7]

Hamamelis mexicana is sometimes considered a species,[8] though (As of 2020) Kew's Plants of the World Online considers it a variety of H. virginiana.[7]

The Persian ironwood, a closely related tree formerly treated as Hamamelis persica, is now given a genus of its own, as Parrotia persica, as it differs in the flowers having just sepals and no petals. Other closely allied genera are Parrotiopsis, Fothergilla, and Sycopsis (see under Hamamelidaceae). Witch-hazels are not closely related to the true Corylus hazels, though they have a few superficially similar characteristics which may cause one to believe that they are.[clarification needed]

Cultivation

They are popular ornamental plants, grown for their clusters of rich yellow to orange-red flowers, which begin to expand in the autumn as or slightly before the leaves fall and continue throughout the winter.

Garden shrubs

Hamamelis virginiana was introduced into English gardens by Peter Collinson, who maintained correspondence with plant hunters in the American colonies. It is rarely seen in the nursery trade except for woodland/wildlife restoration projects and native plant enthusiasts. Much more common is H. mollis, which has bright yellow flowers that bloom in late winter instead of the yellow blossoms of H. virginiana which tend to be lost among the plant's fall foliage. The plant-hunter Charles Maries collected for Veitch Nurseries in the Chinese district of Jiujiang in 1879. It languished in nursery rows for years until it was noticed, propagated, and put on the market in 1902.[9]

Numerous cultivars have been selected for use as garden shrubs, many of them derived from the hybrid H. × intermedia Rehder (H. japonica × H. mollis). Jelena and Robert de Belder of Arboretum Kalmthout, selecting for red cultivars, found three: the first, with bronze flowers, was named 'Jelena'; the next, with red flowers, was named 'Diane' (the name of their daughter); the last, with deep red flowers, was called 'Livia' (the name of their granddaughter).[citation needed]

Phytochemicals and hamamelis water

The main phytochemicals in witch-hazel leaves are polyphenols, including 3–10% tannins, flavonoids, and up to 0.5% essential oil, while the bark has a higher tannin content.[10][11] Hamamelis water, also called white hazel or witch hazel water prepared from a steam-distillation process using leaves, bark or twigs, is a clear, colorless liquid containing 13–15% ethanol having the odor of the essential oil, but with no tannins present.[10][11] Essential oil components, such as carvacrol and eugenol, may be present.[12]

As an ingredient and topical agent, witch-hazel water is regulated in the United States as an over-the-counter drug for external use only to soothe minor skin irritations.[13] Hamamelis (witch-hazel) water is diluted using water in a 1:3 preparation, and is not intended for oral use which may cause nausea, vomiting, or constipation.[11]

Topical ointment

Witch-hazel may be sold as a semisolid ointment, cream, gel, or salve for topical use,[11][14] and due to its astringent and antiseptic properties, has long been used to treat various skin conditions like acne.[15][16] The ointment may ease discomfort from post-partum vaginal soreness and hemorrhoids.[11][17] It is commonly used to treat diaper rash in infants, and may reduce symptoms of inflammation from minor skin injuries.[11] A 2012 review (updated in October 2020) found little evidence of effectiveness from local cooling treatments (including witch-hazel pads) applied to the perineum following childbirth to relieve pain.[18]

Folk medicine

The leaves and bark of the North American witch-hazel, Hamamelis virginiana, were used in folk medicine, herbalism, and skincare decoctions by Native Americans.[10][11][3] Extracts of witch-hazel have been claimed to be effective for psoriasis and eczema, to prevent dehydration of skin, and for insect bites, poison ivy,[19] and razor burn.[20][21][22] There is limited clinical evidence to support witch-hazel as an effective treatment for any of these conditions.[11] Prepared by distillation, the essential oil of witch-hazel has such a small proportion of tannins or other polyphenols that it is unlikely to have any therapeutic effect, and may cause contact dermatitis when used topically.[10][11] It might be useful in treating hemorrhoids and relieving some of its symptoms, although more research is needed.[23]

In 2017, one manufacturer of skin care products containing witch-hazel was warned by the Food and Drug Administration for making unsubstantiated health claims and for not providing evidence the products were safe.[24]

History of medical use

Native Americans of what became New England boiled witch-hazel stems and applied the resulting liquid to sore muscles, cuts, insect bites, piles, inflammations and even tumors. Early Puritan settlers in New England learned about witch-hazel from the Native peoples, but its use did not become widely established in the United States until the 19th century.[19] A missionary, Dr. Charles Hawes, adopted the process of steam distillation of witch-hazel twigs,[19] creating a "Hawes Extract" product sold in Essex, Connecticut, in 1846, by druggist and chemist Alvan Whittemore.[25] Hawes' process was further refined by Thomas Newton Dickinson Sr., who is credited with starting the commercial production of witch-hazel extract, also in Essex, Connecticut, in 1866, and eventually establishing nine production sites in eastern Connecticut during the 20th century.[19][26] Following his death, his two sons, Thomas N. Dickinson Jr., of Mystic, Connecticut, and Everett E. Dickinson of Essex, each inherited parts of the family business and continued the manufacture of witch-hazel extract, operating competing "Dickinson's" businesses that their descendants continued until 1997 when the manufacturing operations from both companies were consolidated at the American Distilling plant in East Hampton, CT.[19]

Gallery

  • Hamamelis flowers, Menai Bridge, Wales

  • Hamamelis, Fürth City Park, Germany

  • Hamamelis, Colonial Park Arboretum and Gardens

  • H. × intermedia

  • Hamamelis japonica close-up flowers

  • H. × intermedia 'Jelena'

  • H. × intermedia 'Diane'

  • Hamamelis mollis tree in autumn

  • Hamamelis mollis in autumn

  • Hamamelis mollis leaves in autumn

  • Winter-flowering, Vogelsberg Mountains

  • Flourishing in winter

References

  1. ↑ Hamamelis ovalis S. W. Leonard (2006), GRIN Taxonomy for Plants
  2. ↑ Noted in Ernest Thompson Seton, The Book of Woodcraft and Indian Lore ({{{2}}}) (1921:422), but rare.
  3. ↑ 3.0 3.1 3.2 "The Mysterious Past and Present of Witch Hazel". The Atlantic. 6 November 2012. https://www.theatlantic.com/health/archive/2012/11/the-mysterious-past-and-present-of-witch-hazel/264553/. 
  4. ↑ "Hiker's Notebook: Witch Hazel". http://www.sierrapotomac.org/W_Needham/Witch_Hazel_041003.htm. 
  5. ↑ Douglas Harper (2001). "witch hazel". Online Etymology Dictionary. http://www.etymonline.com/index.php?term=witch+hazel. 
  6. ↑ Jacob George Strutt (1822). Sylva Britannica. p. 66.  Full text of expanded 1830 edition.
  7. ↑ 7.0 7.1 "Hamamelis Gronov. ex L.". Royal Botanic Gardens, Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30003256-2. 
  8. ↑ Xie, Lei; Yi, Ting-Shuang; Li, Rong; Li, De-Zhu; Wen, Jun (2010). "Evolution and biogeographic diversification of the witch-hazel genus (Hamamelis L., Hamamelidaceae) in the Northern Hemisphere". Molecular Phylogenetics and Evolution 56 (2): 675–689. doi:10.1016/j.ympev.2010.02.018. PMID 20171295. 
  9. ↑ Alice M. Coats, Garden Shrubs and Their Histories (1964) 1992, s.v. "Hamamelis".
  10. ↑ 10.0 10.1 10.2 10.3 Gangemi, Sebastiano; Minciullo, Paola L.; Miroddi, Marco; Chinou, Ioanna; Calapai, Gioacchino; Schmidt, Richard J. (19 January 2015). "Contact dermatitis as an adverse reaction to some topically used European herbal medicinal products – Part 2: Hamamelis virginiana L.; family Hamamelidaceae". Contact Dermatitis 72 (4): 193–205. doi:10.1111/cod.12328. ISSN 0105-1873. PMID 25600644. 
  11. ↑ 11.0 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 "Witch hazel". Drugs.com. 1 June 2020. https://www.drugs.com/npp/witch-hazel.html. 
  12. ↑ Sheila Boulajoun (2007). Natural Sources of Flavourings, Report No. 2. Belgium: Council of Europe Publishing. p. 87. ISBN 978-92-871-6156-7. https://books.google.com/books?id=e8OwTIHMJDAC&q=carvacrol+witch+hazel&pg=PA87. 
  13. ↑ "Code of Federal Regulations; Title 21, Sec. 347.52 Labeling of astringent drug products; (3) For products containing witch hazel". US Food and Drug Administration. 1 April 2016. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=347.52. 
  14. ↑ "Witch hazel – topical". Health Canada: Drugs and Health Products. 13 April 2010. http://webprod.hc-sc.gc.ca/nhpid-bdipsn/atReq.do?atid=witch.hazel.topical. 
  15. ↑ Thring, Tamsyn SA; Hili, Pauline; Naughton, Declan P (13 October 2011). "Antioxidant and potential anti-inflammatory activity of extracts and formulations of white tea, rose, and witch hazel on primary human dermal fibroblast cells". Journal of Inflammation 8 (1): 27. doi:10.1186/1476-9255-8-27. PMID 21995704. "witch hazel has long been used for skin trouble such as acne as an astringent and antiseptic". 
  16. ↑ Jiang, Georgia (2 May 2022). "Witch Hazel Spells Trouble for Harmful Microbes". USDA ARS. https://tellus.ars.usda.gov/stories/articles/witch-hazel-spells-trouble-for-harmful-microbes/. 
  17. ↑ "Postpartum care: What to expect after a vaginal delivery". Labor and delivery, postpartum care. Mayo Clinic. http://www.mayoclinic.com/health/postpartum-care/PR00142. 
  18. ↑ East, Christine E.; Dorward, Emma Df; Whale, Rhiannon E.; Liu, Jiajia (9 October 2020). "Local cooling for relieving pain from perineal trauma sustained during childbirth". The Cochrane Database of Systematic Reviews 2020 (10): CD006304. doi:10.1002/14651858.CD006304.pub4. ISSN 1469-493X. PMID 33034900. 
  19. ↑ 19.0 19.1 19.2 19.3 19.4 Michael C. Bingham, Which Witch Is Witch Hazel (and Which Dickinson Makes It)?, Connecticut Business Journal, 20 October 1997. "Archived copy". http://www.conntact.com/archive_index/archive_pages/3210_Business_New_Haven.html. 
  20. ↑ Farmers' Almanac 2020. Almanac Publishing Company. 2019. ISBN 9781928720348. https://books.google.com/books?id=MXC5DwAAQBAJ. Retrieved 4 August 2022. 
  21. ↑ Draelos, Zoe Kececioglu (1 March 1995). "Cosmetics: An overview" (in en). Current Problems in Dermatology 7 (2): 45–64. doi:10.1016/S1040-0486(09)80017-3. ISSN 1040-0486. https://www.sciencedirect.com/science/article/abs/pii/S1040048609800173. Retrieved 21 August 2022. 
  22. ↑ "Razor Burn". https://my.clevelandclinic.org/health/diseases/23583-razor-burn. 
  23. ↑ "Enlarged hemorrhoids: How can you relieve the symptoms yourself?". InformedHealth.org. January 29, 2014. https://www.ncbi.nlm.nih.gov/books/NBK279466/. 
  24. ↑ "Warning letter: Aegeia Skin Care, LLC". Inspections, Compliance, Enforcement, and Criminal Investigations, US Food and Drug Administration. 6 March 2017. https://www.fda.gov/ICECI/EnforcementActions/WarningLetters/2017/ucm543921.htm. 
  25. ↑ Dickinson's 'Witch Hazel' Will No Longer Be Manufactured in Essex, Essex Events, Spring 1997.
  26. ↑ The E.E. Dickinson Co. (1970?), The Birth of Witch Hazel. 16 pp.

Further reading

  • Fergus, Charles (2002). Trees of Pennsylvania and the Northeast. Stackpole Books. pp. 156–9. ISBN 978-0-8117-2092-2. 
  • Huxley, A., ed (1992). New RHS Dictionary of Gardening. Macmillan. 

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