Genista tinctoria

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  (Redirected from Dyer's greenweed)
Genista tinctoria
Genista tinctoria.jpg
Illustration from Bilder ur Nordens Flora
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Genus: Genista
Species: G. tinctoria
Binomial name
Genista tinctoria
L.
Synonyms

Genista tinctoria (dyer’s greenweed[1] or dyer's broom) is a species of flowering plant of the family Fabaceae. Its other common names include dyer's whin, waxen woad and waxen wood.

Distribution and habitat

This species is native to meadows and pastures in Europe and Turkey. [2]

Description

It is a variable deciduous shrub growing to 60–90 centimetres (24–35 in) tall by 100 cm (39 in) wide, the stems woody, slightly hairy, and branched. The alternate, nearly sessile leaves are glabrous and lanceolate. Golden yellow pea-like flowers are borne in erect narrow racemes from spring to early summer. The fruit is a long, shiny pod shaped like a green bean pod.[3]

Properties and uses

Numerous cultivars have been selected for garden use, of which 'Royal Gold' has gained the Royal Horticultural Society's Award of Garden Merit.[4]

The plant, as its Latin and common names suggest, has been used from ancient times for producing a yellow dye, which combined with woad also provides a green colour.[2]

It was from this plant that the isoflavone genistein was first isolated in 1899; hence the name of the chemical compound. The medicinal parts are the flowering twigs.

The plant has been used in popular medicine and herbalism for various complaints, including skin diseases, even in modern times.[5][6][7]

Gallery

References

  1. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17. 
  2. ^ a b "Broom, Dyer's". Retrieved November 30, 2012. 
  3. ^ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964. 
  4. ^ "Genista tinctoria 'Royal Gold'". Retrieved November 30, 2012. 
  5. ^ Walter ED (1941). "Genistin (an isoflavone glucoside) and its aglucone, genistein, from soybeans". J Am Chem Soc. 62 (12): 3273–3276. doi:10.1021/ja01857a013. 
  6. ^ John Lust. The Herb Book. p. 176. 
  7. ^ N. Yoirish (2001). Curative Properties of Honey and Bee Venom. p. 111. 


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