Hamamelis virginiana

Dracaena sClassification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Saxifragales

Familia: Hamamelidaceae
Subfamilia: Hamamelidoideae
Genus: Hamamelis
Species: Hamamelis virginiana
Name

Hamamelis virginiana L.

References

Linnaeus, C. 1753. Species Plantarum. Tomus I: 124. Reference page.
USDA, ARS, Germplasm Resources Information Network. Hamamelis virginiana in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Vernacular names
English: American witch-hazel, common witch-hazel
suomi: Amerikantaikapähkinäteudneri

Hamamelis virginiana, known as witch-hazel, common witch-hazel, and American witch-hazel, is a species of flowering shrub native to eastern North America, from Nova Scotia west to Minnesota, and south to central Florida to eastern Texas.[1]

Description

It is a small, deciduous tree or shrub growing up to 6 m (rarely to 10 m) tall, often with a dense cluster of stems from its base. The bark is light brown, smooth, scaly, inner bark reddish purple. The branchlets are pubescent at first, later smooth, light orange brown, marked with occasional white dots, finally dark or reddish brown. The foliage buds are acute, slightly falcate, downy, light brown. The leaves are oval, 3.7–16.7 cm (1+7⁄16–6+9⁄16 in) long and 2.5–13 cm (1–5+1⁄8 in) broad, oblique at the base, acute or rounded at the apex, with a wavy-toothed or shallowly lobed margin, and a short, stout petiole 6–15 mm (0.24–0.59 in) long; the midrib is more or less hairy, stout, with six to seven pairs of primary veins. The young leaves open involute, covered with stellate rusty down; when full grown, they are dark green above, and paler beneath. In fall, they turn yellow with rusty spots. The leaf stipules are lanceolate, acute; they fall soon after the leaf expands.

The flowers are pale to bright yellow, rarely orange or reddish, with four ribbon-shaped petals 1–2 cm (1⁄2–3⁄4 in) long and four short stamens, and grow in clusters; flowering begins in about mid-fall and continues until late fall. The flower calyx is deeply four-parted, very downy, orange brown within, imbricate in bud, persistent, cohering with the base of the ovary. Two or three bractlets appear at base. The fruit is a hard woody capsule 10–14 mm (0.39–0.55 in) long, which splits explosively at the apex at maturity one year after pollination, ejecting the two shiny black seeds up to 10 m (33 ft) distant from the parent plant. It can be distinguished from the related Hamamelis vernalis by its flowering in fall, not winter.[1][2][3][4]

Leaf

Flower and fruit

Winter twig, showing elongate brown-pubescent terminal bud, and persistent calyces

Ecology

It supports 62 species of caterpillars. [5]
Uses

Native Americans produced witch hazel extract by boiling the stems of the shrub and producing a decoction, which was used to treat swellings, inflammations, and tumors.[6] Early Puritan settlers in New England adopted this remedy from the natives, and its use became widely established in the United States.[7]

An extract of the plant is used in the astringent witch hazel.

H. virginiana produces a specific kind of tannins called hamamelitannins. One of those substances displays a specific cytotoxic activity against colon cancer cells.[8]

The bark and leaves were used by Native Americans in the treatment of external inflammations. Pond's Extract was a popular distillation of the bark in dilute alcohol.

The wood is light reddish brown, sapwood nearly white; heavy, hard, close-grained, with a density of 0.68.[4]

The forked twigs of witch-hazel are preferred as divining rods.
References

Meyer, Frederick G. (1997). "Hamamelis virginiana". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 3. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Meyer, Frederick G. (1997). "Hamamelis". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 3. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Tenaglia, Dan. "Hamamelis virginiana page". Missouri Plants. Missouri Botanical Garden.
Keeler, H.L. (1900). Our Native Trees and How to Identify Them. New York: Charles Scribner's Sons. pp. 157–160.
Darke, Rick; Tallamy, Doug (2014). The Living Landscape: Designing for beauty and biodiversity in the home garden. London, Portland: Timber Press.
Dweck, Anthony C. "Ethnobotanical Use of Plants, Part 4: The American Continent" (PDF).
Bingham, Michael C. (20 October 1997). "Which Witch Is Witch Hazel (and Which Dickinson Makes It)?". Connecticut Business Journal. Archived from the original on 2 August 2009. Retrieved 27 December 2012.

Sánchez-Tena, Susana; Fernández-Cachón, María L.; Carreras, Anna; Mateos-Martín, M. Luisa; Costoya, Noelia; Moyer, Mary P.; Nuñez, María J.; Torres, Josep L.; Cascante, Marta (January 4, 2012). "Hamamelitannin from Witch Hazel (Hamamelis virginiana) Displays Specific Cytotoxic Activity against Colon Cancer Cells". J. Nat. Prod. 75 (1): 26–33. doi:10.1021/np200426k. PMID 22216935.

External links

"Witch Hazel" . The American Cyclopædia. 1879.