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Geum quellyon
Species of flowering plant From Wikipedia, the free encyclopedia
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Geum quellyon, commonly called scarlet avens,[6] Chilean avens, Double Bloody Mary,[7] or Grecian rose, is a perennial herb in the family Rosaceae. It is native to the central and southern regions of Chile.[3] G. quellyon has been introduced to other countries including Belgium,[8] Bolivia,[3] and the United Kingdom, where it was first planted in 1826.[9]
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Description
Macroscale
Plants reach a height of between 6 and 100 centimeters (2.4 and 39.4 inches).[10] Leaves are compound, with between 3 and 10 pairs of leaflets.[10] G. quellyon grows a thick taproot which smells of cloves when broken due to the presence of aromatic compounds.[10][11] Flowers vary in colour from yellow-orange to pink-red.[12]
Microscale
When in metaphase, somatic chromosomes of G. quellyon (and of G. magellanicum, another species of Geum native to Chile)[13] are shorter and fatter than those in other Geum species.[14]
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Distribution
G. quellyon is native to the following regions of Chile: Araucanía, Aysén, Biobío, Los Lagos (including the island of Chiloé),[15] Magallanes, Maule, Metropolitana de Santiago, Ñuble, O’Higgins, Los Ríos, and Valparaíso.[16]
Uses
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Medicinal
G. quellyon has been used in the traditional medicine of the Mapuche people of Chile for tooth neuralgia, gastric inflammation, prostatitis, and to regulate menstruation.[17][18] A methanolic extract is obtained from its roots.[18]
Observations of a kidney transplant patient showed a pharmacological interaction between G. quellyon and cyclosporine,[19] an immunosuppressant used to prevent transplant rejection.[20]
Horticultural
Geum quellyon is commonly cultivated as a garden ornamental, and in that context is sometimes called Geum chiloense.[1] G. quellyon grows best in full sun to part shade, in moist but well-drained soil.[21][22] Plants become damaged and do not recover well if exposed to temperatures of −4.4 °C (24.1 °F) or below.[23]
Cultivars include:
- Geum 'Blazing Sunset', which produces brick-red double flowers on tall stems from June to September.[24][25] It grows to a height and spread of approximately 60 centimeters (24 inches).[25]
- Geum 'Lady Stratheden',[26] also known as Geum 'Gold Ball', which produces yellow semi-double flowers. The Royal Horticultural Society has awarded Geum 'Lady Stratheden' the Award of Garden Merit.[27]
- Geum 'Mrs J Bradshaw',[28] which produces large semi-double flowers[29] from June to September.[30] It grows to a height and spread of approximately 60 cm.[31] It is often planted in cottage gardens.[32] The Royal Horticultural Society has awarded Geum 'Mrs J Bradshaw' the Award of Garden Merit.[29]
- Geum 'Totally Tangerine', which is a hybrid of G. quellyon 'Mrs J Bradshaw' and G. rivale.[33] It grows to a height of 90 centimeters (35 inches), and produces sterile, peach-orange flowers.[34] It is subject to plant breeders' rights in the European Union and the United Kingdom until 31 December 2036.[35][36]
Diseases
G. quellyon may be affected by pathogens belonging to the genus Peronospora.[37]
Notes
- Not to be confused with Geum coccineum Sm., which is a different species of Geum.[4]
References
External links
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