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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 ...
Rosaceae (/ r oʊ ˈ z eɪ s iː. iː,-s i. aɪ,-s i. eɪ /), [5] [6] the rose family, is a family of flowering plants that includes 4,828 known species in 91 genera. [7] [8] [9] The name is derived from the type genus Rosa. The family includes herbs, shrubs, and trees. Most species are deciduous, but some are evergreen. [10]
The ploidy of this rose species is variable. Botanical authorities have listed it as tetraploid and hexaploid in North America (subsp. sayi), [6] and octoploid in Eurasia (subsp. acicularis), [6] including China. [7] On the northern Great Plains its populations are generally tetraploid.
Pruning and cutting back of the plant often leads to re-sprouting. Two natural biological controls include the rose rosette disease and the rose seed chalid (Megastigmus aculeastus var. nigroflavus). [8] Patches of introduced multiflora rose in Pennsylvania are displaying symptoms of rose rosette disease, which can lead to decline and death. [9]
Rosa rugosa (rugosa rose, beach rose, Japanese rose, Ramanas rose, or letchberry) is a species of rose native to eastern Asia, in northeastern China, Japan, Korea and southeastern Siberia, where it grows on beach coasts, often on sand dunes. [1] It is naturalized in much of Europe and parts of the United States and Canada. [2]
Rosa chinensis (Chinese: 月季; pinyin: yuèjì), known commonly as the China rose, [2] Chinese rose, [3] or Bengal rose, [4] is a member of the genus Rosa native to Southwest China in Guizhou, Hubei, and Sichuan Provinces.
The name "rose of Sharon" is also commonly applied to several horticultural plants, [12] all originating outside the Levant and not likely to have been the plant from the Bible: Hypericum calycinum, the usual plant known by this name in British English. It is an evergreen flowering shrub native to southeast Europe and southwest Asia.
Rosa rubiginosa (sweet briar, [2] sweetbriar rose, [3] sweet brier or eglantine; [2] syn. R. eglanteria) is a species of rose native to Europe and western Asia. Description [ edit ]