Wednesday, May 27, 2009

The Weeping Willow Tree (Sauce Llorón)

This Picture was taken in St James Park by the water pond in March 2005. These willow trees can be found where there is plenty of water. Finding this willow tree in St. James Park was truly a sight to behold. Its pointed leaves and its light elegant foliage flows look like tousled hairs in a graceful flourishing poise, such is the beauty of the weeping willow tree.

Tuesday, May 26, 2009

Ash tree (El Fresno)

Fraxinus, common name Ash, is a genus of usually medium to large trees, mostly deciduous though a few subtropical species are evergreen. Genus Fraxinus are the true ashes, and are in Oleaceae, the olive family, along with olives and lilacs.



The Ash tree sheds all its leaves in Autumn.
It is a deciduous tree.




This year you could see the Ash trees go yellow as soon as Autumn started.
They are so beautiful!!! :)




The Ash tree in Summer is full of green leaves.




Ash tree seeds

The seeds, popularly known as keys or helicopter seeds, are a type of fruit known as a samara. The genus Fraxinus contains 45-65 species.




The leaves are opposite (rarely in whorls of three), and mostly pinnately-compound, simple in a few species.



The tree's common English name goes back to the Old English æsc, a word also routinely used in Old English documents to refer to spears made of ash wood.








The wood is hard (a hardwood), dense, tough and very strong but elastic, extensively used for making bows, tool handles, quality wooden baseball bats, hurleys and other uses demanding high strength and resilience.

It is also often used as material for electric guitar bodies and, less commonly, for acoustic guitar bodies, known for its bright, cutting tone and sustaining quality.

Friday, May 22, 2009

Selection of trees

Photosynthesis


Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. This process occurs in plants and some algae (Kingdom Protista). Plants need only light energy, CO2, and H2O to make sugar. The process of photosynthesis takes place in the chloroplasts, specifically using chlorophyll, the green pigment involved in photosynthesis.
Photosynthesis takes place primarily in plant leaves, and little to none occurs in stems, etc.

Photosynthesis is a process that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight. Photosynthesis occurs in plants, algae, and many species of Bacteria, but not in Archaea.
Photosynthetic organisms are called photoautotrophs, since it allows them to create their own food. Photosynthesis is crucially important for life on Earth, since as well as it maintaining the normal level of oxygen in the atmosphere, nearly all life either depends on it directly as a source of energy, or indirectly as the ultimate source of the energy in their food.

The parts of a tree



Tree roots anchor the structure and provide water and nutrients.

The parts of a tree are the roots, trunk(s), branches, twigs and leaves.

Tree stems consist mainly of support and transport tissues (xylem and phloem). Wood consists of xylem cells, and bark is made of phloem and other tissues external to the vascular cambium.

Trees may be grouped into exogenous and endogenous trees according to the way in which their stem diameter increases. Exogenous trees, which comprise the great majority of trees (all conifers, and almost all broadleaf trees), grow by the addition of new wood outwards, immediately under the bark.
Endogenous trees, mainly in the monocotyledons (e.g., palms and dragon trees), but also cacti, grow by addition of new material inwards.

The roots of a tree are generally embedded in earth, providing anchorage for the above-ground biomass and absorbing water and nutrients from the soil.
It should be noted, however, that while ground nutrients are essential to a tree's growth the majority of its biomass comes from carbon dioxide absorbed from the atmosphere (see photosynthesis). Above ground, the trunk gives height to the leaf-bearing branches, aiding in competition with other plant species for sunlight. In many trees, the arrangement of the branches optimizes exposure of the leaves to sunlight.

Thursday, May 21, 2009

Trees


A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to 6 m; some authors set a minimum of 10 cm trunk diameter (30 cm girth). Woody plants that do not meet these definitions by having multiple stems and/or small size, are called shrubs. Compared with most other plants, trees are long-lived, some reaching several thousand years old and growing to up to 115 m (379 ft) high.


Trees are an important component of the natural landscape because of their prevention of erosion and the provision of a weather-sheltered ecosystem in and under their foliage. Trees also play an important role in producing oxygen and reducing carbon dioxide in the atmosphere, as well as moderating ground temperatures. They are also elements in landscaping and agriculture, both for their aesthetic appeal and their orchard crops (such as apples). Wood from trees is a building material, as well as a primary energy source in many developing countries. As of 2005, there were approximately 400 billion trees on Earth, about 61 per person.