In cell biology, an organelle (/ ÉËr É¡ É Ë n É l /) is a specialized subunit within a cell that has a specific function. Individual organelles are usually separately enclosed within their own lipid bilayers.
Salix babylonica, commonly called weeping willow or Babylon weeping willow, is a medium to large deciduous tree with a stout trunk topped by a graceful broad-rounded crown of branches that sweep downward to the ground.It grows to 30-50â (sometimes to 60â) tall and as wide. It is native to China.ark is gray-black. Branchlets are typically green or brown. This weeping willow can be a spectacular specimen at the edge of a pond with its branches gracefully weeping down to touch the water, however, it is often very difficult to site this tree in a residential landscape.
The Weeping Willow is a fast growing and majestic tree. Growth can be 6 to 8 feet or more a year. As the tree gets large, the long thin branches hang down, creating a flowing umbrella of shade. The best use for these are in wet areas, or where they can be the yard centerpiece or specimen.t's always a toss-up to put some of these in the Fast-Growing section, but these are generally planted more for shade than for privacy screens or windbreaks. The Paulownia is very popular and known for fast growth, and the huge leaves and clusters of purple flowers they can quickly fill a patch of bare ground.