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The Fen Orchid Liparis loeselii, is one of the most endangered wildflowers in Europe, but successful conservation efforts have given hope for its survival. The orchid is only found in two areas of the UK:

  • Sand dunes in South Wales
  • Fens of the Norfolk Broads.

We believe that the orchid could finally be removed from the Red Lists for both England  and Great Britain.

 

Conservation Efforts in England

After a decade of research and partnership work, the orchid has been re-discovered at former sites in the Broads, and the total population has estimated to have risen to over 15,000 plants through proper management.

The orchid has also been reintroduced to its former sites in Suffolk, and the signs are encouraging that it will become established in some of its old homes.

 

Conservation Efforts in Wales

In South Wales, the conservation effort to restore the fragile dune habitat at Kenfig and to rediscover the plant at former dune locations.

At Kenfig numbers had dropped from a conservative 21,000 at the end of the 1980s to just 400 when conservation work began.

After almost 10 years of work, over 4000 Fen Orchids have been counted, more than double the highest number seen in the last two decades.

The orchids once grew at eight dune sites along the south Wales coast, but a lack of active management led to their disappearance. The success at Kenfig gives hope for other dune sites like Whiteford and Pembrey, the former of which the plant has recently been re-found after searching.

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We are well and truly into summer, and we’ve already witnessed a spectacular succession of wild plants flowering over the last few months. Now that we’ve waved goodbye to the anemones and hawthorn is beginning to fade, we’re welcoming the orchids.

Butterfly orchids are delicate, elegant plants, with a single floral spike bearing many pale, creamy green flowers. Each flower resembles a tiny moth (or butterfly) in flight, with its wings outstretched. They are sweetly scented and can be found growing in a diverse range of habitats, from moors and bogs to woodlands, but most commonly they are found in undisturbed grasslands and meadows. 

The difference between Greater and Lesser Butterfly Orchids

Butterfly orchid differences.

There are two species, Greater Butterfly Orchid Platanthera chlorantha and Lesser Butterfly Orchid Platanthera bifolia. The differences between them takes an expert eye to spot, and are to do with the angle between the pollen bearing organs of the plant (the pollinia).  

Both species are pollinated by moths. At night, the first signal a moth will pick up on is the fragrance of the orchid – once closer the pale flowers will stand out against the darkness.

UK orchids are in trouble 

Unfortunately, both species are experiencing dramatic declines nationally.  Greater butterfly orchid is faring the better of the two but is still classed as Near Threatened in the UK. Lesser butterfly orchid has been assessed as Vulnerable on the UK Vascular Plant Red List and has disappeared from over half of its previous range in the last 50 years. 

Declines across both species are because of changes in agricultural grassland management – these species need consistent management over a long time to thrive. Damaging land use change could include too much (or too little) grazing, drainage of fields, and even addition of chemical fertilisers. Orchids rely on a soil fungus to survive, and agricultural chemicals can kill off this unseen life support network. 

Thankfully, as their habitats are safe and protected within our reserves, these species are still thriving. To be sure of this, every year we participate in the butterfly orchid count to monitor how our populations of these beautiful plants are faring.  

2023’s Butterfly Orchid Count Results 

Why do we count our Butterfly Orchids? 

Monitoring how they are faring is an important part of understanding our reserves and making good management choices. Both our Welsh nature reserves are Sites of Special Scientific Interest (SSSI), and both list the Butterfly Orchids as a notified feature- so there is a legal duty to ensure the populations remain in good condition 

Volunteers counting orchids at Caeau Tan y Bwlch nature reserve

We want to be able to demonstrate that the way we are managing land is benefitting them, and counting the number of orchids each year, and gathering supporting habitat information, can help us adjust our site management when we need to. This enables us to give the orchids the best possible chance they have going forwards. 

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Several purple Early Marsh Orchids in the grassland

What are orchids? 

Orchids are part of the largest and most highly evolved family of flowering plants on earth. They are usually highly specialised to a specific habitat, with equally specialised relationships with pollinators, and fungi which live in the soil. 

What makes them so rare?

The majority of species reproduce via tiny seeds that are known as ‘dust seeds’ which need perfect conditions to germinate – with some species even relying on specific types of fungi in the soil for them to grow. This means that conditions in the soil and habitat need to be exactly right for an orchid species to thrive, hence why we don’t encounter them all the time. 

One UK orchid has gained huge notoriety for its rarity, the Ghost Orchid Epipogium aphyllum. This species is currently regarded as extinct but with hopes for its re-discovery. Occurring in Beech woodlands in deep leaf litter where gets its energy from decaying matter, it’s appropriately named for its pinkish white ghostly appearance rising from dead leaves.   

Where can you find orchids in the UK?

Although orchids are not the most common plant you will find, they do occur in a huge variety of habitats. Traditional hay meadows and pastures can host several species, the most common of these are

  • Common Spotted Dactylorhiza fuchsii
  • Marsh Orchids Dactylorhiza sp
  • Bee Orchid Ophrys apifera and
  • Common Twayblade Listera ovata

Many orchids also specialise in woodlands, for example Early Purple Orchid Orchis mascula, Helleborines Epipactus sp and Bird’s-nest Orchid Neottia nidus-avis (pictured), a fascinating yellow orchid without any chlorophyll that depends entirely on getting its food from decaying material in the leaf litter. There are also species that grow in fens and bogs, pine forests, heathlands and dunes.  

The majority of the time due to the specific requirements for growth, orchids tend to be associated with long established habitats, that haven’t had lots of disturbance. Therefore, a nature reserve can often be a useful place to look.  

How to spot orchids in the wild?

The best time of year to look for orchids tends to be late spring and early summer. Quite a few UK orchids have spotted leaves, making them even more distinctive and easy to spot. 

They are perennial plants, and in the UK are formed of a spike of flowers on a single stem. They all share a similar flower structure, despite the huge variety in their appearance. There are 3 sepals (outer protective petal-like parts) and 3 main petals, with one that usually forms a lower lip known as the labellum. This lip is often the largest and most distinctive ‘petal’ structure of the flower. 

Often their intricate design and some species astonishing mimicry to tempt pollinators is one of the most intriguing features of these plants. With Bee and Fly Orchids imitating these insects to attract them to land on the flower, mistaking them for a potential mate, and thereby pollinating the flower. 

How to tell them apart?

The key features of orchids for identification other than habitat, are the leaves (shape and markings) and the lower lip of the flower (labellum). The easiest species to start with are Early Purple Orchid, Common Spotted Orchid, Bee Orchid and Common Twayblade. This is because they are relatively more common than other species and most can occur in grassland and woodland habitats. 

It is always exciting to find any kind of orchid, and worthy of a photo! Just remember to be careful not to tread on any nearby orchids that are just coming up. Share the photos with friends, as you never known who doesn’t know that our wonderful UK orchid species even exist.  

Further reading 

FSC Orchid Guide

The Orchid Hunter by Leif Bersweden  

Britain’s Orchids A Field Guide to the Orchids of Great Britain and Ireland by Sean Cole, Michael Waller and Sarah Stribbling  

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