Cytisus

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Cytisus
Cytisus ardoini2.jpg
Cytisus ardoini
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Fabales
Family:
Fabaceae
Subfamily:
Faboideae
Tribe:
Genisteae[1]
Genus:
Cytisus
Species

43–235; see text.
Synonyms
  • Chamaecytisus Link
  • Chronanthus K. Koch
  • Sarothamnus Wimm.
  • Spartocytisus Webb & Berthel.

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Cytisus is a genus of about 50 species of flowering plants in the family Fabaceae, native to open sites (typically scrub and heathland) in Europe, western Asia and North Africa. It belongs to the subfamily Faboideae, and is one of several genera in the tribe Genisteae which are commonly called brooms. They are shrubs producing masses of brightly coloured, pea-like flowers, often highly fragrant.[2] Members of the segregate genera, Calicotome and Lembotropis are sometimes included in Cytisus.

Species

Cytisus comprises the following species:[3][4][5]

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Species names with uncertain taxonomic status

The status of the following species is unresolved:[5]

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Hybrids and cultivars

The following hybrids have been described:[5]

  • +Laburnocytisus 'Adamii' (Poit.) C. K. Schneid. (Laburnum anagyroides + Chamaecytisus purpureus) (not a true hybrid but a graft-chimera)
  • Cytisus ×beanii G.Nicholson (Cytisus ardoini × Cytisus purgans)
  • Cytisus ×czerniaevii Krecz.
  • Cytisus ×dallimorei Rolfe (Cytisus multiflorus × Cytisus scoparius)
  • Cytisus ×praecox Beauverd (Cytisus multiflorus × Cytisus purgans)
  • Cytisus ×syreiszczikowi V.I. Krecz.
  • Cytisus ×vadasii J.Wagner
  • Cytisus ×versicolor Dippel (Cytisus hirsutus × Cytisus purpureus)
  • Cytisus ×virescens Beck
  • Cytisus ×watereri Wettst.

Species have been widely cultivated and hybridised, and the following cultivars have gained the Royal Horticultural Society's Award of Garden Merit:

  • 'Boskoop Ruby'[9] (crimson flowers)
  • 'Burkwoodii'[10] (red and yellow flowers)
  • 'Hollandia'[11] (red and cream flowers)
  • C. ×kewensis[12] (Cytisus ardoinii × Cytisus multiflorus; small, prostrate shrub with cream flowers)
  • C. ×praecox 'Allgold'[13] (yellow flowers)
  • C. ×praecox 'Warminster' [14] (pale yellow flowers)
  • 'Zeelandia'[15] (pink and cream flowers)
  • 'Lena' broom is noteworthy also as a popular garden shrub of mainly hybrid origins.

References

  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ 5.0 5.1 5.2 Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Some sources treat Cytisus ingramii as a synonym of Cytisus commutatus.
  7. ↑ Some sources treat Cytisus racemosus as a synonym of Genista stenopetala.
  8. ↑ Some sources treat Cytisus stenopetalus as member of the genus Genista: Genista stenopetala.
  9. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  11. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  12. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  13. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  14. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  15. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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