Rare Australian Plant Has Been Cloning Itself For At Least 43,000 Years



There are believed to be only 500 examples of this native Tasmanian shrub, King's Lomatia (Lomatia tasmanica), growing in the wild south west of the island.

From Wikipedia :

The plant has shiny green leaves and bears pink flowers, but yields neither fruit nor seeds.

King's Lomatia is unusual because all of the remaining plants are genetically identical. Because it has three sets of chromosomes (a triploid) and is therefore sterile, reproduction occurs only vegetatively: when a branch falls, that branch grows new roots, establishing a new plant that is genetically identical to its parent.

Although all the plants are technically separate in that each has its own root system, they are collectively considered to be one of the oldest living plant clones. Each plant's life span is approximately 300 years, but the plant has been cloning itself for at least 43,600 years (possibly up to 135,000 years).

Fascinating.


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Did you know koalas have been around for tens of millions of years, and that they're bigger now and more abundant than any other time in their history? Neither did I :

Scientists have gained a glimpse into how the koala, one of the nation's most loved creatures, may have acted tens of millions of years ago.

....perhaps the most important finding to come out of the research is that never in their history have koalas had a period when they were so abundant as they are now.

The fossil remains of the extinct koalas....were about a quarter to a third smaller than today's koalas....

....24 million years ago, koalas and their close relatives, wombats, had long diverged on their evolutionary tree. Koalas were already creatures living in the forest canopy and specialising in eating leaves.

Perhaps the biggest difference between the ancient koalas and the modern variety is that it is clear from the fossil jaws and teeth that whatever the extinct creatures were eating it was nowhere near as tough as the leaves from present day gum trees.

The dominance of eucalypts in Australian forests is a relatively new thing - the result of the drying of the continent following a succession of ice ages. Koala teeth reflect this rarity of eucalyptus in ancient Australian forests.

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