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Rubus strigosus, the American red raspberry or American raspberry, is a species of Rubus native to much of North America. It was often treated as a variety or subspecies of the closely related Eurasian Rubus idaeus (red raspberry or European red raspberry), [ 1 ] [ 2 ] but is now more commonly treated as a distinct species.
It is a thornless perennial up to 30 centimetres (12 inches) tall, woody at the base, but very thin higher above the ground. Flowers are in groups of 1–3, the petals pink, red, or magenta. The fruit is deep red or dark purple, with an unusual hardiness to frost and cold weather conditions. [2] [10] Ripe Arctic raspberry
Halved raspberry Raspberry dessert with fresh cheese and honey. Rubus idaeus (raspberry, also called red raspberry or occasionally European red raspberry to distinguish it from other raspberry species) is a red-fruited species of Rubus native to Europe and northern Asia and commonly cultivated in other temperate regions. [3] [4]
Rubus hawaiensis, also called the ʻĀkala, is one of two species (with R. macraei) commonly known as Hawaiian raspberry, endemic to Hawaii. It is found on the islands of Kauaʻi , Molokaʻi , Maui , O'ahu , and Hawaiʻi in mesic to wet forest at elevations of 600–3,070 m (1,970–10,070 ft). [ 3 ]
Red-fruited raspberries European Rubus idaeus raspberry fruits on the plant. The raspberry is the edible fruit of several plant species in the genus Rubus of the rose family, most of which are in the subgenus Idaeobatus. [1] The name also applies to these plants themselves. Raspberries are perennial with woody stems. [2]
The yellow Himalayan raspberry is a threat to native flora because it can outcompete other plants. More specifically, it has higher photosynthetic rates, higher nitrogen fixation rates, and therefore a higher photosynthetic nitrogen use efficiency (or PNUE). [17] The yellow Himalayan raspberry is currently only invasive on Hawaii. [12]
Rubus occidentalis is a deciduous shrub growing to 2 to 3 metres (6.6 to 9.8 ft) tall. [6] The leaves are pinnate, with five leaflets on leaves, strong-growing stems in their first year, and three leaflets on leaves on flowering branchlets.
Rubus parviflorus is a dense shrub up to 2.5 meters (8 feet) tall with canes no more than 1.5 centimeters (1 ⁄ 2 inch) in diameter, often growing in large clumps which spread through the plant's underground rhizome.