i-Tree - Tools for Assessing and Managing Community Forests Ziziphus spina-christi Ziziphus spina-christi, the Christ's Thorn Jujube is an evergreen tree native to northern and tropical Africa and southern and Western Asia. It grows in Israel in valleys up to an elevation of 500m. Ziziphus spina-christi has significance to Jews, Christians and Muslims, and is by some traditions the tree from which Jesus's Crown of Thorns was made. The ripe fruits are edible and the flowers are an important source of honey in Eritrea and Yemen. References Ziziphus spina-christi in West African plants – A Photo Guide. Other links
Fruit Identification Outline a. Achene: Very small, one-seeded fruit, usually produced in clusters. At maturity the pericarp is dry and free from the internal seed, except at the placental attachment. This is the typical fruit of the largest plant family, the sunflower family (Compositae or Asteraceae). Examples of this type of fruit include the sunflower (Helianthus), buttercup (Ranunculus) and sycamore (Platanus). b. c. d. One of the most painful schizocarps is the puncture vine (Tribulus terrestris). e. f. g. Note: Wayne's Word contains a lot of additional information about the remarkable duckweed family (Lemnaceae), the undisputed world's smallest flowering plants. Dutch Study Says Wi-Fi Makes Trees Sick A recent study by Dutch scientists found that Wi-Fi radiation could be responsible for sickness in urban-populated trees. Image: baltimoresun What would life be like without Wi-Fi, bringer of high speed internet access? Probably pretty inconvenient considering that millions of computer users around the world use it at home, at work and other public places to get online. Having access to wireless networks makes our lives easier, but according to a Dutch study from Wageningen University, this access may be compromising the health of trees. The study began five years ago in the city of Alphen aan den Rijn. According to an article from PC World : “The study exposed 20 ash trees to various radiation sources for a period of three months. Image: p2pnet Sounds pretty scary, doesn’t it? What do you think? digg
Pir-e Herisht. Abarkuh. Pilgrimage in Zoroastrianism Suggested prior reading: » Yazd Region Associated reading: » Udvada » Zoroastrian Places of Worship - Atash Bahrams The first part of the directions to Pir-e Herisht are the same as that for Pir-e Sabz. Pir-e Herisht is dedicated to the royal Yazdegird governess Morvarid (also spelt Murvarid). It was a passing traveller who built the first shrine. While not a pir, the Cypress of Abarkuh is nevertheless a quasi-pilgrimage destination. Abarku is home to a 4,500 year old cypress (Persian, sarv) tree that stands some 25 metres tall. For Zoroastrians, the cypress (Persian, sarv) is rich with symbolism. The tree and its park are next to a mosque which built over a Zoroastrian chahar-taqi temple. On the outskirts of the city are the ruins of an old caravanserai, a testament to Abarku once being a rest-stop on a branch of the ancient Aryan trade roads, also called the Silk Roads. » Top Pilgrimage pages: » Pilgrimage start page » Pir-e Sabz / Chak-Chak » Seti Pir. » Pir-e Banu. » Pir-e Herisht.
Society of American Foresters Global Justice Ecology Project: GlobalJusticeEcology.org , Hinesburg, VT Israeli biotech firm says its modified eucalyptus trees can displace the fossil fuel industry by John Vidal, environment editor, The Guardian, Thursday 15 November 2012 GM eucalyptus trees at five-and-a-half years old, grown in a field trial. FutureGene claims GM species grow thicker and faster than the natural plant, making it possible to be grown for energy generation.It's a timber company's dream but a horrific industrial vision for others: massive plantations of densely planted GM eucalyptus trees stretching across Brazil, South Africa, Indonesia and China, engineered to grow 40% faster for use as paper, as pellets for power stations and as fuel for cars. The prospect is close, says Stanley Hirsch, chief executive of the Israeli biotech company FuturaGene. Hirsch claims the gene-altering technique is an industrial "game-changer" and integral to the UN's vision of a future "global green economy". "Our trees grow faster and thicker. FuturaGene is no small start up company.
Buy affordable Giant Sequoia trees at arborday Attributes: Giant Sequoias are well-named, being arguably the largest trees in the world. They make excellent specimen trees and buffer strips. When planted 20 feet apart, they also serve as excellent windbreaks. They are a very long-lived tree, some cultivated examples being several hundred years old. Wildlife Value: Wildlife primarily use Giant Sequoias for shelter. History/Lore/Use: From their earliest discovery, America's Redwoods have fired the imagination and the human sense of wonder as few other living things have done. Moisture: Normal moisture requirements, with no flooding and only slight drought tolerance. Leaves: This tree has bluish-green needles, spirally arranged on the terminal leader, approximately 1/4 inch long. Flower Color: Nondescript light brown. Bloom Time: April-May Fruit Description: The fruit is oval to round; 1-1/2 to 3 inches long, dry and hard, nondescript.
Tree Encyclopedia Trees have three principle features that distinguish them from all other plants. First, they have a woody stem, roots and branches which do not die back in winter, but continue to grow year after year. From the moment of its germination, a tree remains visible; from the tallest Sequoia to the smallest garden fruit tree, this principle of growth remains constant. Trees live longer than any other organism on earth. Trees commonly live more than 1,000 years, and many grow considerably older. Pando (Latin for “I spread”), aka “the trembling giant,” is a clone colony of male quaking aspen, (Populus tremuloides) a single living organism identified by identical genetic markers. Trees have been living on Earth for more than 370 million years, and today can be found almost everywhere from the Arctic Circle to the Sahara Desert. Family Aceraceae: Maples are some of our most familiar and beloved trees. Legumes harbor nitrogen-fixing bacteria in nodules in their root structures.
Rainforest Portal Buy affordable Tuliptree trees at arborday Attributes: The Tuliptree is the state tree of Kentucky and Indiana because of its majestic beauty. It is a fast-growing shade tree that displays colorful yellow flowers in the early summer, replaced by equally colorful seeds held upright in the tree throughout the summer and into autumn. Wildlife Value: Tuliptrees provide food in many forms for many animals. History/Lore/Use: Once plentiful in their natural habitat in eastern America, Tuliptrees, with their tall, straight trunks, lack of lower branches, and hard wood, were favorites of loggers for railroad ties and fence posts. Moisture: It has normal moisture requirements, and can withstand some drought in humid regions only. Leaves: The leaves alternate, 3 to 6 inches long with distinctive lobes, a flat base, and two ear-like tips. Flower Color: Flowers are tulip-shaped, 1-1/2 to 2 inches in diameter with 6 greenish-yellow petals, each with orange at the base. Bloom Time: May to June. Fruit Description:
Tree Disease identification, symptoms, treatment options for tree diseases There are many different diseases that affect landscape trees and shrubs. Control of tree and shrub diseases cannot be properly accomplished until the disease pest is identified. Identification of tree and shrub diseases is crucial because, although most diseases can be controlled, there are some diseases that cannot be controlled. Disease control on landscape trees and shrubs can sometimes be accomplished by more than one method, depending on the particular disease that if infecting your landscape plants. Even if you are going to attempt to control a disease that is infecting your landscape trees or shrubs you should consider consulting a local arborist.