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List of Rosa species

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There is significant disagreement over the number of true rose species. Some species are so similar that they could easily be considered variations of a single species, while other species show enough variation that they could easily be considered to be different species. Lists of rose species usually show more than 320.[1] The numbers 320 to 350 are the figures accepted by most botanists, but as Bailey has pointed out, the extreme lumpers Bentham and Hooker only allowed for 30 species, while the extreme splitter Michel Gandoger allowed 4,266 species just in Europe and West Asia.[2]

Subgenera and sections

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Rosa banksiae
Rosa persica

There are currently four subgenera in Rosa, although there have been some disputes over the years.[3] The four subgenera are:

  • Hulthemia (formerly Simplicifoliae, meaning "with single leaves") containing one or two species from Southwest Asia, R. persica and R. berberifolia (syn. R. persica var. berberifolia) which are the only species without compound leaves or stipules.
  • Hesperrhodos (from the Greek for "western rose") with two species, both from southwestern North America, R. minutifolia and R. stellata.
  • Platyrhodon (from the Greek for "flaky rose", referring to its flaky bark) with one species from East Asia, R. roxburghii.
  • Rosa (the type subgenus) containing all the other species. This subgenus is subdivided into 11 sections.
    • Banksianae – white and yellow species from China
    • Bracteatae – three species, two from China and one from India
    • Caninae – pink and white species from Europe, Asia and North Africa
    • Carolinae – white, pink and bright pink species, all from North America
    • Chinensis – white, pink, yellow, red and mixed-color species from China and Burma
    • Gallicanae – pink to crimson and striped species from Europe and West Asia
    • Gymnocarpae – a small group distinguished by a deciduous receptacle on the hip; one species in western North America (R. gymnocarpa), the rest in East Asia
    • Laevigatae – a single white species from China
    • Pimpinellifoliae – white, pink, bright yellow, mauve and striped species from Europe and Asia
    • Rosa (syn. sect. Cinnamomeae) – white, pink, lilac, mulberry and red species from all areas except North Africa
    • Synstylae – white, pink, and crimson species from all areas

Species

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Rosa arvensis
Rosa canina
Rosa gallica
Rosa glauca
Rosa × kordesii
Rosa moschata
Rosa multiflora
Rosa nitida
Rosa palustris
Rosa pouzinii
Rosa rubiginosa
Rosa rugosa
Rosa setigera
Rosa spinosissima
Rosa virginiana
Rosa woodsii
Rosa xanthina

The following species are accepted:[1]

See also

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References

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  1. ^ a b "Rosa L." Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 18 June 2021.
  2. ^ Bailey, Liberty Hyde (1935). Standard Cyclopedia of Horticulture. Vol. 3. New York: MacMillan Co. p. 2981.
  3. ^ [1], The genus Rosa (Rosoideae, Rosaceae) revisited: molecular analysis of nrITS-1 and atpB-rbcL intergenic spacer (IGS) versus conventional taxonomy, 2005
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