Alex Hyde / Fragrant Orchid (Gymnadenia conopsea) and Yellow Rattle (Rhinanthus sp.) flowering in ancient alpine hay meadow. Nordtirol, Austrian Alps. June.

Nick Upton / Traditional organic hay meadow with a profusion of wild flowers and grasses including Pyramid orchid (Anacamptis pyramidalis) Common spotted orchid (Dactylorhiza fuchsii, Rough hawkbit (Leontodon hisp...

Wild Wonders of Europe / Giesbers / Eurepean yellow rattle (Rhinanthus alectorolophus) flowering in alpine meadow, Liechtenstein, June 2009

Wild Wonders of Europe / Giesbers / European yellow rattle (Rhinanthus alectorolophus) flowering in alpine meadow, Liechtenstein, June 2009

Rolf Nussbaumer / Greater yellow rattle flower {Rhinanthus alectorolophus} Switzerland.

Ernie Janes / RF - Seiser Alm Dolomites plateau, Alpine meadow with orchids and yellow rattle, South Tyrol, Italy. (This image may be licensed either as rights managed or royalty free.)

Ernie Janes / RF - Seiser Alm Dolomites plateau, Alpine meadow with orchids and yellow rattle, South Tyrol, Italy. (This image may be licensed either as rights managed or royalty free.)

Steve Nicholls / Seed head of Yellow-rattle (Rhinanthus minor), limestone grassland on Rodborough Common, Gloucestershire, UK. September 2011

Nick Garbutt / Alpine Wildflower meadow, a diversity of species including Meadow clary (Salvia pratensis), Sainfoin (Onobrychis sp) and Rattle (Rhinanthus sp). North Tyrol, Austria. June.

Ross Hoddinott / Green-veined white butterfly (Pieris napi) resting on yellow rattle (Rhinanthus minor) flower, Volehouse Moor Nature Reserve, Devon, England, UK. July.

Mike Read / Wildflowers growing in puszta grassland with Yellow rattle (Rhinanthus minor) near Tiszaalpar, Kiskunsag National Park, Hungary, June 2017

Mike Read / Wildflowers growing in puszta grassland with Yellow rattle (Rhinanthus minor) near Tiszaalpar, Kiskunsag National Park, Hungary, June 2017

Stephen Dalton / Brimstone butterfly (Gonepteryx rhamni) on Yellow rattle flower (Rhinanthus minor) Somerset, England, UK, May.

Rod Williams / Yellow rattle flowers (Rhinanthus minor) and Wild Marjoram (Origanum vulgare) Hutchinson's Bank, New Addington, London, England, UK. August.

Stephen Dalton / Larger skipper (Ochlodes sylvanus) feeding on Yellow rattle (Rhinanthus minor) Rookery Wood, Sussex, England, UK. June.

Stephen Dalton / Yellow rattle in flower (Rhinanthus minor) Sussex, England, UK, July.

Stephen Dalton / Larger skipper (Ochlodes sylvanus) feeding from Yellow rattle (Rhinanthus minor) flowers, Sussex, England, UK. June.

Fabrice Cahez / Meadow with flowers of Meadow clary (Salvia pratensis), Yellow rattle (Rhinanthus minor), Sainfoin (Onobrychis viciifolia) and Ox-eye daisy (Leucanthemum vulgare), Vosges, France. May.

Fabrice Cahez / Meadow with flowers of Meadow clary (Salvia pratensis), Yellow rattle (Rhinanthus minor), Sainfoin (Onobrychis viciifolia) and Ox-eye daisy (Leucanthemum vulgare), Vosges, France. May.

Fabrice Cahez / Flower meadow with Meadow clary (Salvia pratensis), Yellow rattle (Rhinanthus minor), Sainfoin (Onobrychis viciifolia) and Ox-eye daisy (Leucanthemum vulgare), Vosges, France. May.

Andy Sands / Yellow rattle (Rhinanthus minor) flower head, Buckinghamshire, England, UK, June - Focus Stacked Image

Ross Hoddinott / Marbled White butterfly (Melanargia galathea) resting on Yellow rattle (Rhinanthus minor) flower, Volehouse Moor Nature Reserve, Devon, England, UK. July.

Chris Mattison / Yellow rattle (Rhinanthus minor) New Grove Meadows, Monmouthshire, Wales.

MYN / Dirk Funhoff / Greater yellow rattle (Rhinanthus alectorolophus) flower, Büchelberg, Pfalz, Germany. May. Meetyourneighbours.net project

MYN / Dirk Funhoff / Greater yellow rattle (Rhinanthus alectorolophus) flower, Büchelberg, Pfalz, Germany. May. Meetyourneighbours.net project

Stephen Dalton / Two images of a meadow with Oxeye Daisies (Leucanthemum vulgare) Cat's-ear (Hypochaeris radicata) and Yellow rattle (Rhinanthus minor) in late June. The top image is taken in sun, the bottom one in...

Stephen Dalton / Meadow flowers with Yellow Rattle (Rhinanthus minor) Ribwort Plantain, Red Clover and Buttercup in flower, Holly Farm, Sussex, UK

Stephen Dalton / Grass meadow in flower with White clover (Trifolium repens) Red clover (Trifolium pratense) and Yellow rattle (Rhinanthus minor) Sussex, UK

Stephen Dalton / Yellow rattle (Rhinanthus minor) in flower, Sussex, UK

Alex Hyde / Yellow Rattle (Rhinanthus sp.) growing in a traditional hay meadow. Yellow Rattle parasitises the roots of grass species, reducing their vigour and allowing other plant species to flourish. Nordtirol,...

Alex Hyde / Burnt / Burnt-tip Orchid (Orchis ustulata), Fragrant Orchid (Gymnadenia conopsea) and Yellow Rattle (Rhinanthus sp.) flowering in ancient alpine meadow. Nordtirol, Austrian Alps. June.

Stephen Dalton / Meadow with Common spotted orchids (Dactyloriza fuchsii) and Yellow Rattle (Rhinanthus minor) Sussex, England, UK. May.

Stephen Dalton / Yellow rattle (Rhinanthus minor) in flower, Sussex, England, UK. June.

Ross Hoddinott / Marbled white butterfly (Melanargia galathea) resting on yellow rattle (Rhinanthus minor), Volehouse Farm, Devon, UK. June.

Alex Hyde / Yellow Rattle (Rhinanthus minor) ripe seed capsules on a white background in mobile field studio. Peak District National Park, Derbyshire, UK. June.

Alex Hyde / Yellow Rattle (Rhinanthus minor) ripe seed capsules. Derbyshire, UK. June.

Alex Hyde / Yellow Rattle (Rhinanthus minor) Derbyshire, UK. June.

Alex Hyde / Brimstone butterfly (Gonepteryx rhamni) on Yellow Rattle seed head (Rhinanthus minor). Peak District National Park, Derbyshire, UK. August.

Nick Upton / Low angle view of a dense stand of Yellow rattle (Rhinanthus minor) flowering in a chalk grassland meadow, Wiltshire, UK, June.

Nick Upton / Dense stand of Yellow rattle (Rhinanthus minor) flowering in a chalk grassland meadow, Wiltshire, UK, June.

Nick Upton / Southern marsh orchids (Dactylorhiza praeternissa), Common spotted orchids (Dactylorhiza fuchsii), Yellow rattle (Rhinanthus minor) and Buttercups (Ranuncuus acris) flowering in a traditional hay mead...

Robert Thompson / Yellow rattle (Rhinanthus minor) in flower, Gedre, Pyrenees National Park, Hautes Pyrenees, France, July.

Robert Thompson / Fragrant orchid (Gymnadenia conopsea) and Yellow rattle (Rhinanthus minor) in flower, Gavarnie, Pyrenees National Park, France, June.

Robert Thompson / False-heath fritillary butterfly (Melitaea diamina) on Yellow rattle (Rhinanthus minor) flower, Gavarnie, Pyrenees National Park, France, June.

Paul Harcourt Davies / Yellow rattle (Rhinanthus minor) and Meadow clary (Salvia pratense) in flower, Sibillini, Umbria, Italy, June

Niall Benvie / Yellow Rattle (Rhinathus minor) flower against white background. Scotland, UK, July.

Nick Upton / Slender-footed robberfly (Leptarthrus brevirostris) standing on Yellow rattle flower (Rhinanthus minor), chalk grassland meadow, Wiltshire, UK, June.

Ross Hoddinott / Small pearl bordered fritillary (Boloria selene) resting on yellow rattle (Rhinanthus minor), RHS Rosemoor, Devon, UK. May