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As its name suggests, it is the largest species of rose, climbing 20 m or more into the crowns of other trees by means of its stout, hooked thorns, and with a trunk up to 50 cm diameter. The leaves are semi-evergreen, 15–25 cm long, pinnate, with usually 7 leaflets, each leaflet 4–8 cm long.
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 ...
Cattle spread the seed efficiently through their feces. Poor knowledge of how detrimental it is to the local economy and native species has led Rosa rubiginosa to become the threat that it is today. It is estimated that it causes several millions of dollars worth of damage each year. [10] Rosa rubiginosa is an invasive species in southeast ...
Rosa × odorata or Rosa odorata is a hybrid flowering plant of the genus Rosa native to Yunnan in southwest China, whose taxonomy has been confused. It has been considered a hybrid of Rosa gigantea and Rosa chinensis, or as a quite rare wild species that includes R. gigantea. The wild forms are cultivated to some extent. [2]
Rosa setigera, commonly known as the climbing rose, [2] prairie rose, [1] and climbing wild rose, [3] is a species of shrub or vine in the Rosaceae (rose) family native to central and eastern North America.
The leaves are deciduous, 4–8 cm (1 + 5 ⁄ 8 – 3 + 1 ⁄ 8 inches) long, with 7–11 leaflets with a serrated margin. The flowers are 2.5–5 cm (1–2 inches) diameter, white, with (unusually for a rose) only four petals. The hips are red, 8–15 mm (5 ⁄ 16 – 19 ⁄ 32 inch) diameter, with persistent sepals, and often bristly.
The Judas tree (Cercis siliquastrum) is 10–15 m tall tree native to the south of Europe and southwest Asia. It is found in Iberia, southern France, Italy, Bulgaria, Greece, and Asia Minor, and forms a low tree with a flat spreading head. In early spring it is covered with a profusion of magenta flowers which appear before the leaves.
The plants that form this species were previously thought to form part of the natural genetic diversity of Arundinaria gigantea (Walt.) Muhl., but upon in depth analysis using modern phylogenetic methods based on morphology and amplified fragment length polymorphisms, the researchers determined that the canes form three species. [7]