Tag Archive | "Tree"

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The tallest in the planet

Posted on 04 June 2012 by RE Team

James Cameron may have imagined giant hometrees in Pandora with height more than 150 meters in his 3D animation movie “Avatar”. But our own planet Earth is also not too behind in this in reality. Do you know the tallest living organism in our planet? We have listed down all the competitors in the race here.

1. Coast Redwood (Sequoia sempervirens) - Tallest in North America and the TALLEST in the planet. It is an evergreen, monoecious tree with a life span more than 3000 years. Currently found in coastal California and the southwestern corner of Oregon in the United States, this species of tree can grow beyond 100 meters. The tallest known living Redwood is 115.3 meters (379 feet) known as Hyperion. It was discovered September 8, 2006, by Chris Atkins and Michael Taylor, naturalists who explored California coast redwoods including Redwood National Park.

 

Coast Redwood - courtesy Richard Masoner @flickr

 

2. Australian Mountain-ash (Eucalyptus regnans) - The Australian Mountain-ash, a species of Eucalyptus native to southeastern Australia, in Tasmania and Victoria, is a contender from Oceania. It is defnitely one of the tallest species in the planet and in very close run with Coast-Redwood. It’s always debatable which species is the tallest, but the Mountain-as is the undoubtedly the evergreen tree os the tallest flowering plant with an average heightof  around 80 meters.  The tallest measured living specimen, named Centurion, stands 99.6 metres tall in Tasmania. But there are many controversial claims exceeding more than 120 meters. Due to heavy deforestation, logging in Australia in lste 19th century, it is believed that many of the tallest specimens fell prey to humans. Historically, the tallest individual is claimed to be the Ferguson Tree, at 132.6 metres (435 ft), found in the Watts River region of Victoria in 1871.  The claim considered to be unreliable. The most reliable claim stands at  112.8 metres (370 ft)  in 1880 by a surveyor, George Cornthwaite, at Thorpdale, Victoria.

 

Australian Mountain Ash - courtesy Poytr(Pete the poet) @flickr

 

3.  Yellow Meranti (Shorea faguetiana) - The contender in this category from Asia is a Yellow Meranti. This tree is in Tawau Hills Park of Malaysia. The tree is measured as  88.32 Meters (about 290 feet) in height. This is supposed to be the tallest tropical tree in the planet.

4. Caucasian Fir (Abies nordmanniana) - The tallest native tree of Europe is the Caucasian Fir, which grows in the Caucasus as well in Turkey. Alan Mitchell (1996) gives 68.6 m (225 feet) as its greatest height.
Vladimir Dinets (e-mail 1998) gives a maximum height of 78 m (255.9 feet) near Mzymta River in the Caucasian National Reserve, Russia.

5.  Patagonian Cypress (Fitzroya cupressoides) -  This large evergreen, dioecious tree species is the contender from South America. It is not only the tallest in South America but also one of the logest living species known in the planet. The tallest specimen though not recorded may be more than 70 meters in Argetina. Guardaparques (park rangers) state in Argentina has trees ranging 60-70 meters that can be found on the southern branch of Lake Menendez, but that area is restricted to visitors and there aren’t trails or roads to get there.

6. Antarctica is out of this contest as no tree grows in the continent.

 

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The Rarest Palm Tree Survives

Posted on 30 April 2012 by RE Team

In 1919, Scotish Botanist William Roxburgh, who is considered as the father of Indian botany, discovered a very rare palm tree endemic to the Bengal region of India. The palm tree grows around 40 feet tall and the most interesting fact is that is seeds only once in it’s lifetime. It flowers only at around the age of 80 and after seeding it dies. Roxburgh idetified this species as very rare as very few instances of this tree was found in wild. It was also found that the flower structure is extraordinarilly large when it flowers. The palm tree was scientifically named as “Corypha Taliera“. Locally it is known as Tali Palm in the bengal region.

The Talipalm is solitary in nature, gorws moderately but becomes massive in size. It gorws till 80 years without producing a flower. At the end of it’s life, the flowers grow at the top of this tree and the leaves below it slowly dries out. Finally the trunk with millions of golf-ball sized seeds lives on for sometime. The seeds rains down for months producing thousands of saplings. With further studies it revealed this palm tree is really extra-ordinary. It currently hold two records in world’s botanical world. It holds the record of the largest flower structure in the world along with another palm species “Corypha umbraculifera”. The other record is of the largest palmate leaf which is 6 m. (20 ft.) wide.

The Largest Flower Structure in the world on the top of the Last Tali Palm in Wild

Due to the Tali Palm’s (Corypha taliera) rare nature, it was not known the local people of Bengal much. In 1979, a Tali Palm tree , located in a village in the Birbhum district of West Bengal, India, had begun flowering. The locals fearing that it was a ‘ghost palm tree’ due to its horn-like flowers. Botanist Shamal Kumar Basu came to know about its existence and tried to motivate local people but failed. Local fearful people chopped it down before the flower could set seed. It was the last known wild specimen of the Palm tree reported in last 30 years. Fortunately, there are some specimens of the tree preserved in the Howrah botanic garden in India.

Shamal Kumar Basu visited Bangladesh in 2001, when he saw the Tali Palm tree in the Dhaka University campus. This tree was identified as of the genus “Corypha” in 1950 by Professor Md. Salar Khan from the Department of Botany,Dhaka University. At that time he failed identify the exact species of the plant but realized it to be a rare species. There were construction going on the University campus, so Khan appealed to the higher autority to take special steps to preserve this tree and not to cut down. Since then the tree was preserved well in the Vice-Chancellor residential quarter. When Botanists visited the campus, he immediately identified it as “Corypha Taliera”. This Tali Palm in the campus became legend as it was the only naturally grown Tali Palm tree known in the world.

The last naturally Grown Tali Palm(Corypha taliera) In Dhaka

In 2010 January, the Tali Palm in the Dhaka University finally flowered and dried out naturally. Some of the seeds were preserved and let others plant naturally. Thousands of tali palm sapling grew naturally under the mother tree and around 500 grown artificially. The effort by various organizations to save this rarest Plam tree brought fruits. Now the saplings are planted in various locations and maintained properly. Some of the seeds from the mother tree were also put on research to find any medicinal value of it. The primary results are exciting as it can be used for the treatment of can be used in curing diseases like typhoid and diarrhoea. It also may be used as anti-ageing but needs to be confirmed yet.

The “IUCN Red List” has listed “Corypha Taliera” as “Extinct from Wild”. But the botanists in Bangladesh and in India are doing good to preserve the saplings. Currently there a number of grown Tali Palm in the Howrah Botanical Garden of India and we will have to wait till these tress become around 80 years old to flower.

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MOST CONCERNED ENDANGERED SPECIES

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