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An unusual root canal shape, complex branching (especially the existence of horizontal branches), and multiple root canals are considered as the main causes of root canal treatment failures. (e.g. If a secondary root canal goes unnoticed by the dentist and is not cleaned and sealed, it will remain infected, causing the root canal therapy to fail).
Pyrus pashia, the wild Himalayan pear, is a small to medium size deciduous tree of the small and oval shaped crown with ovate, finely toothed leaves, attractive white flowers with red anthers and small pear-like fruits. It is a fruit bearing tree that is native to southern Asia.
The whole tree The fruit. Pyrus salicifolia is a species of pear, native to the Middle East.It is widely grown as an ornamental tree, almost always as a pendulous (or "weeping") cultivar, and is called by various common names, including willow-leaved pear, [2] weeping pear, and similar.
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 .
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.
It is a small tree, that grows in hedgerows or at the edge of woods. The Plymouth pear is considered to be either a subspecies of Pyrus pyraster (European wild pear) or a distinct species. [ citation needed ] It is one of the rarest trees in the UK and it is protected under Schedule 8 of the Wildlife and Countryside Act and seeds have been ...
The pear tree and shrub are a species of genus Pyrus / ˈ p aɪ r ə s /, in the family Rosaceae, bearing the pomaceous fruit of the same name. Several species of pears are valued for their edible fruit and juices, while others are cultivated as trees. The tree is medium-sized and native to coastal and mildly temperate regions of Europe, North ...
The Doyenné du Comice pear originated in France, where it was first grown at the Comice Horticole in Angers in the 1840s. [1] The varietal was a chance discovery, and a commemorative plaque in the Loire states: "In this garden was raised in 1849-50 the celebrated pear Doyenné du Comice by the gardener Dhomme and by Millet de la Turtaudiere, President of the Comice Horticole."