Discovering New Species and Relocating Extinct Plants

Shrewsbury Darwin Festival 2025

Dr Maarten Christenhusz

Roughly 2300 new plant species are described each year. They are found in various ways, in the field, herbaria, genetic studies and even online. Sadly, some new species may already be extinct before they were even described.

Thousands of plant and animal species have gone extinct since humans started roaming the earth, but most plant extinctions never left a trace. This poses the problem known as Berkeley extinction: species that may once have existed but were never recorded and thus were never listed as extinct. They disappeared unnoticed. We will never know how many there were and where they grew. However, species that were recently listed as extinct may still exist. It will take some effort, but it is possible that many of these presumed extinct species may still be found somewhere. Modern technology such as satellites and drones are now being employed to scout for new and extinct species in inaccessible places.

With virtually everyone now carrying a camera and a GPS in their pocket, the information on species is increasing through an army of amateur and professional naturalists. This can be used to identify areas of high biodiversity, map rare species and even find new species or rediscover presumed extinct ones.

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