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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 .
Over 3000 cultivars of the pear are known. [1] The following is a list of the more common and important cultivars, with the year and place of origin (where documented) and an indication of whether the pears are for cooking, eating, canning, drying or making perry.
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]
The Callery pear, or Bradford pear, is one of those vampires. Over the years, Callery pear (Pyrus calleryana) has become one of the most widely planted ornamental trees in the US. But over that ...
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.
Where the same plants have non-bee pollinators such as birds or other insects like flies, these are also indicated. Pollination by insects is called entomophily. Entomophily is a form of plant pollination whereby pollen is distributed by insects, particularly bees, Lepidoptera (butterflies and moths), flies and beetles.
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]
Opuntia engelmannii is a prickly pear common across the south-central and Southwestern United States and northern Mexico.It goes by a variety of common names, including desert prickly pear, discus prickly pear, Engelmann's prickly pear [2] in the US, and nopal, abrojo, joconostle, and vela de coyote in Mexico.
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