Thailand’s “loneliest tree”, a solitary tree growing on a rocky islet only a few meters in diameter, is being seriously threatened by hoards of tourists desperate to get a selfie with it.

The small patch of land located just off the country’s eastern coast, in Trat Province, has been dubbed ‘Koh Khai Hua Roh’ because it looks similar to the island featured in drawings of funny scenes involving a man and a woman trapped on an island in the popular Khai Hua Roh (Selling Laughter) comic. The uninhabited islet is quite a sight to behold, as it is home to a solitary taban tree (Xylocarpus rumphii) that clings to life despite being surrounded by salt water. Unfortunately, the tree’s popularity might just be the death of it…

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The Royal Botanical Gardens at Kew, in the UK, are home to thousands of fascinating plants, but none as lonely as the Encephalartos woodii, an ancient cycad species and, most likely, the last one of its kind.

It was in 1895 that botanist John Medley Wood noticed this interesting-looking palm tree on a steep slope in Zululand, southern Africa. Intrigued by its multiple trunks and arched palm fronds, Dr. Wood — who made his living collecting rare plants – had some stems removed and sent to London in a box.It ended up in the Palm House at the Royal Botanical Gardens of Kew, where it has been waiting for a mate for over a century. Despite numerous efforts to find it a mate, the Encephalartos woodii at Kew remains alone, unable to produce an offspring and propagate its species. For this reason, many consider it the world’s loneliest plant.

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According to the Guinness Book of World Records, a Sitka Spruce growing on New Zealand’s southernmost subarctic island, is the loneliest and most remote tree on Earth. Not only is it the only tree on Campbell Island, but the nearest other tree can be found over 200 kilometers away, on the Auckland Islands.

Located about 700 km south of Bluff, Campbell Island is one of the harshest places in the world. With strong winds blowing almost all year round, less than 600 hours of sunshine and only 40 days per year without rain, it’s not exactly an ideal place to live, which is probably why, except for occasional visits by research scientists, it has remained deserted for over half a century. Trees aren’t supposed to be growing here either, a fact made evident by the wind-tolerant shrubs and grasses covering the island, which only makes the thriving “loneliest tree on Earth” so much more impressive.

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