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Pyrus calleryana, also known as the Callery pear or Bradford pear, is a species of pear tree native to China and Vietnam, [2] in the family Rosaceae. It is most commonly known for its cultivar 'Bradford' and its offensive odor, widely planted throughout the United States and increasingly regarded as an invasive species .
a hybrid of the Chinese "sand pear", P. pyrifolia and probably 'Bartlett'. Hardy in Zones 4–9. eating, canning, baking: 170–190 Kikusui [20] Kikisui: Pyrus pyrifolia. Not suitable for shipping. eating: Kosui [141] [167] (幸水) Russet apple pear National Institute of Fruit Tree Science, Japan: c. 1959
The majority of pollinators of pear trees are honey bees, although pears are also visited by blow flies and hoverflies. [1] In some areas, such as the Emilia-Romagna area of Italy, honeybees could not be used to pollinate pears due to the spread of fireblight in the 1990s, and Osmia cornuta were used as pollinators instead. [ 14 ]
Pyrus communis, the common pear, is a species of pear native to central and eastern Europe, and western Asia. [ 3 ] It is one of the most important fruits of temperate regions, being the species from which most orchard pear cultivars grown in Europe , North America , and Australia have been developed.
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Pyrus bourgaeana, the Iberian pear, is a species of pear in the rose family Rosaceae, and a close relative of the common pear (Pyrus communis).This small tree (typically 3–6 m high) is widely distributed across the southern Iberian Peninsula and northern Morocco, [3] where it coexists with four other Pyrus species: common pear, Plymouth pear (), almond-leaved pear (), and snow pear ().
Pyrus ussuriensis, also known as the Ussurian pear, Harbin pear, and Manchurian pear, is a species of flowering plant in the family Rosaceae. [1] It is native to Korea, Japan, china, and the Ussuri River area of far eastern Russia. It has flowers in spring that are slightly pink when budding and then turn white. [2]
The Le Conte pear is a deciduous pear tree growing to 8m. It is not frost tender. The flowers are hermaphrodite and are pollinated by insects. The fruit is edible raw or cooked. The flesh resembles that of the Asian pear. The fruit can be eaten as soon as it is picked, and can store for several days to several months.