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Rosa rugosa is a suckering shrub which develops new plants from the roots and forms dense thickets 1–1.50 m tall with stems densely covered in numerous short, straight prickles 3–10 mm long. The leaves are 8–15 cm long, pinnate with 5–9 leaflets, most often 7, each leaflet 3–4 cm long, with a distinctly corrugated (rugose, hence the ...
Rose rosette disease – This disease is caused by a relatively recently described virus, Rose rosette emaravirus, [10] that is transmitted by an eriophyid, rose leaf curl mite (Phyllocoptes fructiphilus), which inhabits the shoot tips and leaf petal bases of roses, as well as by grafting but not by seed or many other common vectors.
Rugosa rose 'Blanc Double de Coubert' (Cochet 1893) The hybrid rugosas likewise are not officially old garden roses, but tend to be included in them. Derived from Rosa rugosa ("Japanese rose"), native to Japan and Korea and introduced into the West circa the 1880s, these vigorous roses are extremely hardy with excellent disease resistance. Most ...
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 ...
Rosa glauca is a deciduous shrub of sparsely bristled and thorny cinnamon-coloured arching canes 1.5–3 m (4.9–9.8 ft) tall. The leaves are distinctive, a glaucous blue-green to coppery or purplish, and covered with a waxy bloom; they are 5–10 cm long and have 5–9 leaflets.
Rosa 'Jens Munk' is a medium pink, Hybrid Rugosa cultivar, bred by Canadian rose breeder, Felicitas Svejda in 1964. It was introduced in Canada in 1979 by Agriculture and Agri-Food Canada . Named for the Norwegian explorer, Jens Munk , who explored the Northwest Passage in 1619, it is one of the Canadian Explorer roses that Svejda developed and ...
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