Laurie Campbell / Winter aconite (Eranthis hyemalis) flowers emerging through snow, Roxburghshire, Scotland, February

Orsolya Haarberg / Winter aconite (Eranthis hyemalis) flowers, Szatmar-Bereg, Hungary.

Paul Hobson / Snowdrop flowers (Galanthus nivalis) and Winter aconite (Eranthis sp), Peak District NP, UK

Paul Hobson / Snowdrop (Galanthus nivalis) and Winter aconite (Eranthis sp) flowering, Peak District NP, UK

Paul Hobson / Winter aconite (Eranthis hyemalis) bud closed, Peak District NP, UK

Heather Angel / Common drone fly (Eristalis tenax) nectaring on Winter aconite (Eranthis hyemalis). Surrey, England, UK.. February.

Heather Angel / Winter aconite (Eranthis hyemalis) flower and bud. Ring of nectaries formed from petals. In garden, Surrey, England, UK. February.

Heather Angel / Winter aconite (Eranthis hyemalis) with ring of nectaries below stamens. Focus stacked.

Heather Angel / Winter aconite (Eranthis hymenalis) in UV light, pollen on outer stamens that have dehisced fluorescing. Focus stacked.

Nick Upton / Monkshood (Aconitum napellus) flowering among limestone rocks on montane pastureland, Covadonga, Picos de Europa, Asturias, Spain, August.

Nick Upton / Monkshood (Aconitum napellus) flowering on montane pastureland above Lake Ercina, Lakes of Covadonga, Picos de Europa, Asturias, Spain, August.

Loic Poidevin / Monkshood (Aconitum napellus) in flower in mountain, Valais, Switzerland, September

Will Watson / Monk's-hood (Aconitum napellus), Cadmore Brook, Tenbury Wells, Worcestershire, England, UK, May.

Alex Hyde / Monkshood (Aconitum napellus) Nordtirol, Austrian Alps. June.

Robin Chittenden / Snowdrops (Galanthus nivalis) and Winter Aconite (Eranthis hyemalis) Norfolk UK February

Ernie Janes / Winter aconites (Eranthis hyemalis) flowers grown commercially, Norfolk, England, UK, February 2015.

Adrian Davies / Winter aconite (Eranthis hyemalis) flower, Surrey, England, March.

Ernie Janes / Winter aconite (Eranthis hyemalis) flower buds in snow, UK, February.

Jussi Murtosaari / Aconite bumblebee (Bombus consobrinus) in flight to flower, eastern Finland, July.

Thomas Marent / Winter Aconite (Eranthis hyemalis) flowers, Switzerland

Thomas Marent / Winter Aconite (Eranthis hyemalis) flowers, Switzerland

Ernie Janes / Winter aconites (Eranthis hyemalis) in snow, UK February

Gary K. Smith / Winter aconite (Eranthis hyemalis) growing through snow covered ground, England, UK, February.

Ernie Janes / Basket of Polyanthus plants (Primula sp) in flower beside Snowdrops and Aconites, Norfolk, UK, January

Simon Colmer / Winter Aconite (Eranthis hyemalis) flowering, Brighton, Sussex, UK. February

Ernie Janes / Jack russell terrier in woodland, amongst Aconite flowers, UK

Konstantin Mikhailov / Yellow wood anemone {Eranthis sp} flowering in woodlands in central Russia, April 2008

Konstantin Mikhailov / Yellow wood anemone {Eranthis sp} flowering in woodlands in central Russia, April 2008

Adrian Davies / Winter aconite {Eranthis hyemalis} flowers, UK

Paul Hobson / Snowdrop (Galanthus nivalis) and Winter aconite (Eranthis sp)flowering, Peak District NP, UK

WILLIAM OSBORN / Winter aconites {Eranthis hyemalis} flowering, Glos, UK

WILLIAM OSBORN / Winter aconites {Eranthis hyemalis} flowering, Glos, UK

Nature Production / Setsubunso / Winter aconite flowers {Eranthis pinnatifida} Japan

WILLIAM OSBORN / Winter aconite {Eranthis hyemalis} flowering in winter woodland. Gloucestershire, UK.

Jason Smalley / Winter aconite {Eranthis hyemalis} Cumbria, UK

Jason Smalley / Winter aconite {Eranthis hyemalis} flowering, Cumbria, UK.

Mark Yates / Winter aconite (Eranthis hyemalis). England, UK, Europe

David Kjaer / Winter aconite flowering (Eranthis hyemalis) + snowdrops. North Yorkshire, England, UK, Europe

Thomas Marent / Winter Aconite (Eranthis hyemalis) flowers, Switzerland

Thomas Marent / Winter Aconite (Eranthis hyemalis) flowers, Switzerland

Ernie Janes / Polyanthus plants (Primula sp) in flower beside Snowdrops and Aconites, Norfolk, UK, February

Lewis Jefferies / Monkshood (Aconitum napellus) in flower on mountainside with view to Seceda Mountain on the Adolf Munkel Hiking route, Odle/ Geisler mountain group, Puez-Odle Nature Park, South Tyrol, Italian Dolomit...

Lewis Jefferies / Monkshood (Aconitum napellus) in flower on mountainside with view to Seceda Mountain on the Adolf Munkel Hiking route, Odle/ Geisler mountain group, Puez-Odle Nature Park, South Tyrol, Italian Dolomit...

Lewis Jefferies / Monkshood (Aconitum napellus) in flower on mountainside with view to Seceda Mountain on the Adolf Munkel Hiking route, Odle/ Geisler mountain group, Puez-Odle Nature Park, South Tyrol, Italian Dolomit...

Adrian Davies / Winter aconite (Eranthis hyemalis) flowering, Surrey, England, March.

Adrian Davies / Winter aconite (Eranthis hyemalis) flowering, Surrey, England, March.

Chris Mattison / Winter aconite (Eranthis hyemalis) Naturalised in the UK. Monmouthshire, February. Focus stacked image.

Paul Harcourt Davies / Aconite-leaved buttercup (Ranunculus aconitifolius). Dolomites, Italy. June.

Pal Hermansen / Bumblebee (Bombus consobrinus) nectaring on Aconite (Aconitum lycoctonum septentrionale). Buskerud, Viken, Norway. July.

Linda Pitkin / Winter aconite (Eranthis hyemalis), naturalised under trees in a park. Haling Grove, Surrey, England, January.

Linda Pitkin / Winter aconite (Eranthis hyemalis), naturalised under trees in a park. Haling Grove, Surrey, England, January.

Will Watson / Winter Aconite (Eranthis hyemalis), deciduous woodland, Cotswolds, Goucestershire, England, January.

Steve Nicholls / Winter aconite (Eranthis hyemalis) close up with white background.

Steve Nicholls / Monkshood (Aconitum napellus) growing on the banks of the Mells Stream in Edford Woods, Somerset, UK, a Somerset Wildlife Trust reserve. May 2011

Andy Sands / Winter aconite (Eranthis hyemalis) flowering in snow, Buckinghamshire, England, UK, February

Andy Sands / Snowdrops (Galanthus Sp) and Winter aconite (Eranthis hyemalis) flowering en masse in parkland, Wiltshire, England, UK, February