The Triarius, a

tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only woody plants with secondary growth, only ...

, is a very large ''

Eucalyptus regnans ''Eucalyptus regnans'', known variously as mountain ash (in Victoria), giant ash or swamp gum (in Tasmania), or stringy gum, is a species of very tall forest tree that is native to the Australia states of Tasmania and Victoria. It is a straigh ...

'' that is located in southern

Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The sta ...

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

. In 2010 the tree was estimated to be tall, its diameter was , and the volume of the trunk was . The tree was discovered in August 2008 by employees of

Forestry Tasmania Sustainable Timber Tasmania, formerly Forestry Tasmania, is a government business enterprise owned by the Government of Tasmania, Australia. It is responsible for the management of public production forest in Tasmania, which is about 800,000 h ...

while analysing the data collected by

LiDAR Lidar (, also LIDAR, an acronym of "light detection and ranging" or "laser imaging, detection, and ranging") is a method for determining ranging, ranges by targeting an object or a surface with a laser and measuring the time for the reflected li ...

system used in mapping and assessment of state forest resources. The tree was discovered located in

secondary forest A secondary forest (or second-growth forest) is a forest or woodland area which has regenerated through largely natural processes after human-caused Disturbance (ecology), disturbances, such as Logging, timber harvest or agriculture clearing, or ...

and survived logging and forest fires by a lucky coincidence. Next to the ''Triarius'', south-east from it there grows the highest known eucalypt in the world - the tall ''E. regnans'' named ''

Centurion In the Roman army during classical antiquity, a centurion (; , . ; , or ), was a commander, nominally of a century (), a military unit originally consisting of 100 legionaries. The size of the century changed over time; from the 1st century BC ...

''. In 2019 Triarius suffered major fire damage in the January 2019 bush fires. While not reduced in height many of the branches and leaves dropped off and its survival was uncertain months later.

References

{{Southern Tasmania , state=autocollapse Individual eucalypts Tourist attractions in Tasmania Tasmanian forests Southern Tasmania Individual trees in Tasmania