Common Plane tree

The common plane tree , or plane tree with maple sheet, is an hybrid of species of Arbre of the family of the Platanaceae usually used like and ornamental tree alignment along the streets. This species is regarded as a fertile Hybride between the Platane of the East and the Platane of Occident appeared during the 18th century in Europe.

The hybrid is named Platanus ×hispanica Mill. ex Münchh. (synomyme of Platanus ×acerifolia (Aiton) Willd.)

Etymology: the term “plane tree” was borrowed, via Latin, with the Greek of tree, platanos , of platus , broad name , in reference to the width of the Houppier.

The specific name, acerifolia , i.e. with maple sheet, refer to the resemblance of the sheets of this species to those of the maple, particularly with those of the Norway maple, Acer platanoïdes , and even more maple sycamore, Acer pseudo-platanus (false plane tree), which is him is thus named for its resemblance to the plane tree by the sheets, the size and the general port…

Origin

Existing in Europe, with the Cretaceous, the plane tree disappears there at the glacial era. The Plane tree of Occident (little running to Europe) and the Plane tree of the East (planted by the Romans in Italy, about the year 390 av. J.C.) evolve/move differently. They are introduced and hybrid in England about 1650, to give the Plane tree common or plane tree to maple sheets, more running to France.

Characteristics

Lifespan: approximately 500 years, although there exists in Greece an individual of almost 2000 years
known maximum Taille: 45 m (a Parisian plane tree).
Port: broad houppier.
Trunk: right, being able to reach an impressive diameter with the age.
characteristic Bark which fissures in scales (Rhytidomes), releasing from the yellowish zones. The aspect of snakeskin of the bark is rather particular.

null and void Foliage. Large sheets (20 cm) alternate (contrary to the maple which has opposite sheets) with 3 or 7 little toothed lobes. The veins do not leave all the same point. The starts-up are covered with maroon hairs which remain a certain time on the sheets, mixing with the hairy seeds which are released from the fruits of the last year (in April). The sheets are large, coriaces, not easily putrescible.
Flowers: unisexuées, joined together in spherical flowerheads during at the end of a length Stalk.

Fruits: The fruits are small Akène S surrounded by a sleeping bag which facilitates the dissemination by the wind. They are grouped in balls or Glomérule S which persists a long time after the fall of the sheets.

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