Fruit trees need a minimum of 6-8 hours sunlight daily, and need water. It is not pretentious to the environmental factors. It is planted widely in the United States and now grows wild in many parts of the country. Pyrus is the Latin name for pear; calleryana is named after J. Callery, a French missionary to China who collected the original tree and brought it to the Western World. The medium-sized pear … The fruit is an edible pome. A20 (Virus Indicator) = PI 637992 (2717.001) - Pyrus communis L. - Pedigree: Perry Pear seedling selection - Virus Biological Assays - Negative: A20-2004 PV-2002, Uncertain: NP-2003 - Traits: VIRUS INDICATOR for bark disorders Aarer Pfundbirne (3x) = PI 282966 (8.003) - Pyrus communis L. It is a fairly new variety, being a cross between two classic varieties, ‘Conference’ and ‘Doyenné du Comice’. Bacterial diseases. The bark is grayish brown and occurs in long vertical plates. The Common Pear grows well in moist soils. It is assumed of being native from Asia (China and Asia minor). The Common Pear tree is a native of Europe and western Asia where it has been known and cultivated since ancient times. Pyrus communis. It is reliable, yields good crops of well-flavoured fruit, and is well suited to growing in the British climate. Botanical name: Pyrus communis Family: Rosaceae (rose) Deciduous; Cultivar of the common pear; 15-30 ft in height; Smooth bark when young, thickens and becomes more coarse as it ages; White flowers appear in the spring; Simple, glossy, green, serrated margins have fine teeth. The smooth, gray-brown bark becomes scaly as the tree grows. Pear (Pyrus communis) is a fruit tree that is part of the Rosaceae family. Short side shoots are often thorn tipped. Fruit: A large edible pome (3 to 4 inches), pear-shaped. The leaves are oval or round, and the petiole is hairy. Bartlett Pear Pyrus communis ‘Bartlett’ A European pear with large yellow fruit and smooth, juicy white flesh. Pyrus communis L. – (Pear tree) Deciduous tree of the Rose family -rosaceae-, up to 10 m. Grey erect trunk, with its bark breaking into stripes. leaves alternate on the twig ... Pyrus communis … Leaves are petiolate, alternate, ovate to elliptic in outline, slightly pubescent (especially when young), and with serrate to crenate or rarely entire margins. Ovate leaves till 10 cm, bright green above, glabrous. White or rosy flowers, till 1,5 cm wide, gathered in corymbs from 3 to 7. Pyrus communis ‘Concorde’ is an excellent choice for growing in Britain. The following is a list of diseases of pears (Pyrus communis. The name Common Pear (Pyrus communis) is now considered to refer collectively to more than 1000 cultivars and their wild derivatives. Flower: Clusters of showy white flowers (each 1/2 to 3/4 inch across) appearing before or with the leaves. Moonglow pear trees (Pyrus communis "Moonglow") bloom with fragrant white flowers from April through May. 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