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Sarah Shuttleworth
In the UK we have over 45 species of orchid – which might be more than you thought!
Learn more about this wild and wonderful family of plants with Plantlife wildflower expert Sarah Shuttleworth.
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.
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.
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
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.
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.
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.
Early Purple Orchids are out amongst the bluebells in older woodlands amongst the Bluebells or edges of woods around mid-May. They are a fuchsia pink/purple colour with minimal patterns on the lower petals, and have spotted leaves at the base.
Green-winged Orchids can be found in species-rich, old meadows, often popping up with lots of Cowslips in mid-May. They don’t have spotted leaves and have green streaks on the pink/purple wing like petals.
Early to mid June is then the best time to look for Common Spotted and Bee Orchids in the species-rich grasslands. They have spotted leaves that occur up the stems, and much paler flowers than the Early Purple, that are streaked and patterned with dark pink.
Bee Orchid is very distinctive with its mimicry of a bee flower and unmarked green leaves.
Common Twayblade has two large, rounded leaves that grow opposite each other, with the flower spike starting as a knobbly spike between the two leaves, growing taller to display small green flowers that appear to have two dangly legs.
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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