Creature 271: Wollemia nobilis

Still a lot to discover

It is fairly common knowledge that many, if not most animals have not yet been documented by Science. You may however think that all the species of large trees in the world have been documented by now. If so this species should cast some doubt on that assertion. Wollemia nobilis is commonly known as the Wollemi pine.

The tree can grow up to 40 m tall and can sprout multiple trunks. It was found in Wollemi national park only 150 km from Sydney, Australia's largest city. It was first documented in 1994, just over 20 years ago. It was discovered by an avid bushwalker who found a small population of them. 



The Wollemi pine is from a mostly extinct ancient family of trees which still has a few remaining species. It was common in the dinosaur era and its dark green foliage and the bubble like texture of the bark make it look like it comes from another era.

Distribution:

The Wollemi pine has not been found growing in the wild outside of Wollemi national park. The wold population is probably fewer than a 100 trees however several specimens have been cultivated and are now commercially available.

Classification:

The Wollemi pine is not really a pine (genus Pinus). It is, however in the  same order (Pinales).  The family Araucariaceae used to exist all over the world during the dinosaur era, but is now restricted to a few relict gondwanan populations.

Kingdom: Plantae
Division: Pinophyta
Class: Pinopsida
Order: Pinales
Family: Araucariaceae
Genus: Wollemia
Species: Wollemia nobilis

Image Links:

http://plantsinaction.science.uq.edu.au/edition1/?q=figure_view/15

http://rota.hubpages.com/hub/-Wollemi-Pine-A-Living-Fossil#

http://globaltrees.org/threatened-trees/trees/wollemi-pine/

Creature 72: Pinus longaeva

This tree is older than the Egyptian Pyramids

Pinus longaeva is commonly known as the Great Basin Bristlecone Pine. It introduces a new category label for this blog as its reason for being here comes from the fact that it is so long lived.

Description: 

Pinus longaeva is not a particularly large tree growing 5 to 15m tall. This is fairly large for a mountain tree, but it doesn't compare in size to some of the largest trees.

Young trees look much different to old trees with young trees covered in smooth grey bark while older trees are a reddish brown colour and the bark is often mostly stripped off the trunk by the centuries of harsh mountain winds. Parts of the trunk often die off as the tree ages and in fact sometimes there can be only a thin strip of living tissue joining the roots to a few living branches. So how old do they get?

The oldest living specimen was measured to be 5,062 years old in 2012 by a man named Tom Harland. This makes it the oldest individual tree in the world (yes, wait for the sequel). Average life exppectancy is hard to measure in such long lived species but it probably greatley depends on their position. On some mountain slopes the average age of living specimens is up to 2000 years old. The exact location of this tree was not revealed out of fear that tourism would endanger the tree.

Distribution:
Pinus longaeva is found at high altitudes. It has a patchy distribution and is restricted to the Southwest American states of California, Nevada and Utah.

Classification:
The genus Pinus encompasses the true pine trees.
Kingdom: Plantae
Phylum: Pinophyta
Class: Pinopsida
Order: Pinales
Family: Pinaceae
Genus: Pinus
Species: Pinus longaeva

Image Credit:

http://de.wikipedia.org/wiki/Langlebige_Kiefer#mediaviewer/File:Pinus_longaeva_6.jpg

http://www.conifers.org/pi/Pinus_longaeva.php