Wild Wonders of Europe / Giesbers / White hellebore (Veratrum album) flower, Liechtenstein, June 2009

Wild Wonders of Europe / Radisics / Black hellebore (Veratrum nigrum) Durmitor NP, Montenegro, May 2008

Heather Angel / Christmas rose (Helleborus niger) flower, pollen on dehisced anthers and on petals fluorescing in UV light. Nectar ring appearing red. Focus stacked.

Adrian Davies / Stinking hellebore (Helleborus foetidus) in hazel woodland. Surrey, England, UK. April.

Tim Fitzharris / Green False Hellebore (Veratrum viride) along lake, Dana Plateau, Ellery Lake, Sierra Nevada, Inyo National Forest, California

Kerstin Hinze / Green hellebore (Helleborus viridis), Haseder Busch Nature Reserve Hasede, Hildesheim county, Lower Saxony, Germany

Fabrice Cahez / Stinking hellebore (Helleborus foetidus) Lozere, France, March.

Kirkendall-Spring / Green false hellebore (Veratrum viride) in Olympic National Park, Washinton, USA. May 2016.

MYN / ACREMAR / Green Hellebore (Helleborus viridis) in flower, Italy, February. meetyourneighbours.net project

Philippe Clement / Pheasant's eye / false hellebore (Adonis vernalis) in flower, Belgium, April.

Philippe Clement / False helleborine / white hellebore (Veratrum album) in flower, Belgium, April.

Philippe Clement / False helleborine / white hellebore (Veratrum album) in flower, Belgium, April.

Philippe Clement / False helleborine / white hellebore (Veratrum album) in flower, Belgium, April.

Paul Harcourt Davies / Green Hellebore (Helleborus viridis) with seed capsules, the Il Sasseto near Orvieto, Italy. March.

Floris van Breugel / Corn Lilies (Veratrum californicum) in flower, North Cascades, Washington, USA, August.

Ernie Janes / California Corn Lily (Veratrum californicum) poisionous garden plant, England, UK, August.

Adrian Davies / Wasp (Vespula sp) pollinating Broad Leaved Helleborine Orchid (Epipactis hellebore) with pollinia on head, Surrey, England, UK, August.

Adrian Davies / Wasp (Vespula sp) pollinating Broad Leaved Helleborine Orchid (Epipactis hellebore) Surrey, England, UK, August.

Adrian Davies / Wasp (Vespula sp) pollinating Broad Leaved Helleborine Orchid (Epipactis hellebore) with pollinia on head, Surrey, England, UK, August.

Adrian Davies / Wasp (Vespula sp) pollinating Broad Leaved Helleborine Orchid (Epipactis hellebore) with pollinia on head, Surrey, England, UK, August.

MYN / Paul Harcourt Davies / Green Hellebore (Helleborus viridis) in flower, Il Sasseto nr Orvieto, Italy, March. Meetyourneighbours.net project

Bence Mate / Hellebore {Helleborus sp} flowering in snow, Pusztaszer, Hungary

MYN / Marko Masterl / Christmas rose (Helleborus niger) in flower, Slovenia, Europe, March. meetyourneighbours.net project

MYN / Marko Masterl / White hellebore (Cephalanthera damasonium) in flower, Slovenia, Europe, June. meetyourneighbours.net project

MYN / Marko Masterl / Christmas rose (Helleborus niger) in flower, Slovenia, Europe, March. meetyourneighbours.net project

Gary K. Smith / Hellebore (Helleborus ranunculaceae orientalis) planted in garden border in spring. UK, March.

Martin Gabriel / White hellebore (Veratrum album) flowering, Allgaeu Alps, Bavaria, Germany

Will Watson / Green Hellebore (Helleborus viridis) flowering, Herefordshire, England, UK, April

Philippe Clement / European White Hellebore / Veratrum (Veratrum album) flower spike, The Ardennes, Belgium

Philippe Clement / European White Hellebore / Veratrum (Veratrum album) flower spike, The Ardennes, Belgium

Philippe Clement / Stinking Hellebore / Dungwort (Helleborus foetidus) in flower, Belgium

Philippe Clement / Stinking Hellebore / Dungwort (Helleborus foetidus) in flower, Belgium

Dietmar Nill / Stinking hellebore (Helleborus foetidus) flowers appearing through snow, Germany

Wild Wonders of Europe / Zupanc / False hellebore (Veratrum sp) growing amongst rocks, Triglav National Park, Julian Alps, Slovenia, July 2009

Philippe Clement / European white hellebore / False helleborine (Veratrum album) in flower, Gran Paradiso National Park, Italy

Wild Wonders of Europe / Giesbers / White hellebore (Veratrum album) flower, Liechtenstein, June 2009

Wild Wonders of Europe / Giesbers / White hellebore (Veratrum album) in flower, Liechtenstein, June 2009

Wild Wonders of Europe / Radisics / Black hellebore (Veratrum nigrum) close-up of plant, Durmitor NP, Montenegro, May 2008

Guy Edwardes / Black hellebore (Helleborus niger) flowers, Visic Pass, Triglavski National Park, Julian Alps, Gorenjska, Slovenia, March

Guy Edwardes / Black Hellebore {Helleborus niger} flowers, Julian Alps, Slovenia, March

Guy Edwardes / Black Hellebore {Helleborus niger} flowers, Julian Alps, Slovenia, March

Jerry Monkman / False Hellebore {Veratrum viride} on stream bank, in East Haddam, Connecticut, USA

Rolf Nussbaumer / White Hellebore {Veratrum album} flower, Switzerland, May

Martin Gabriel / Christmas Rose (Helleborus niger) Bavaria, Germany

Jean E. Roche / Hellebore (Helleborus lividus corsicus) Corsica, France

Tim Fitzharris / False Hellebore (Veratrum sp) surrounded pond with Grand Turk and Kendall Mountains in background, Molas Pass, Colorado

Niall Benvie / Close up of a Stinking hellebore {Helleborus foetidus} flowers, Scotland, UK.

Niall Benvie / Stinking hellebore {Helleborus foetidus} in flower, Scotland, UK.

Niall Benvie / Stinking hellebore {Helleborus foetidus} shot from below, Scotland, UK.

Niall Benvie / Close up of Stinking hellebore flower {Helleborus foetidus} UK.

Adrian Davies / Stinking hellebore flowers {Helleborus foetidus} Surrey, UK

Adrian Davies / Stinking hellebore in flower {Helleborus foetidus} Surrey, UK

Rob Tilley / Corn lily / False hellebore leaves {Veratrum viride} Mt Rainier NP, Washington, USA.

Tim Fitzharris / False Hellebore (Veratrum sp) with frost, Gothic, Colorado

Yva Momatiuk & John Eastcott / California False Hellebore (Veratrum californicum) frost-covered leaves, Payette River, Idaho

Konrad Wothe / Christmas-rose (Helleborus niger) flowers, Alps, Austria

Konrad Wothe / Christmas-rose (Helleborus niger) flowers, Alps, Austria

Silvia Reiche / Christmas-rose (Helleborus niger) flower, Netherlands

Tim Fitzharris / Fireweed (Chamerion angustifolium) flowering in dense brush, San Juan Mountains, Colorado

Guy Edwardes / White false helleborine (Veratrum album) flowering in pasture, Rhodope Mountains, Bulgaria. June.

Paul Harcourt Davies / Green hellebore (Helleborus viridis) flowering in woodland, Villa Cahen, Orvieto, Umbria, Italy. January.

Paul Harcourt Davies / Green hellebore (Helleborus viridis) flowering in woodland, Il Sasseto, Torre Alfina, Lazio, Italy. January.

Oliver Hellowell / Lenten rose (Helleborus orientalis) in flower, UK. February.

Linda Pitkin / Watercolour painting of Stinking hellebore (Helleborus foetidus). Botanical illustration by Linda Pitkin.

Paul Harcourt Davies / Green hellebore (Helleborus viridis) in flower, Orvieto, Umbria, Italy. February.

Konrad Wothe / White false hellebore (Veratrum album) growing on a mountainside, Alps, Engadine, Switzerland. July.

Paul Harcourt Davies / Green hellebore (Helleborus viridis) in flower growing on path, Tuscany, Italy. January.

Paul Harcourt Davies / Green hellebore (Helleborus viridis) in flower growing on path, Tuscany, Italy. January.

Nigel Cattlin / Lenten rose (Helleborus hybridus) red flower of an ornamental garden plant showing typical structure of flowering Ranunculaceae, Berkshire, UK, February.

Paul Harcourt Davies / White false helleborine (Veratrum album) at 2200m. Valparola Pass, near Cortina, Dolomites, Belluno, Italy. July.

Paul Harcourt Davies / White false helleborine (Veratrum album) beside lake in Dolomites at 2200m. Valparola Pass, near Cortina, Dolomites, Belluno, Italy. July.

Lorraine Bennery / Narrow leaved hellebore (Cephalanthera longifolia) Grands Causses Regional Park, Aveyron, France, May.

Nigel Cattlin / A Ranunculaceae (Helleborus spp.) flower section showing stucture; anthers, stamens, styles, stigmae, nectaries

Linda Pitkin / Green hellebore (Helleborus viridus), locally rare plant Ranmore Common, Surrey, England, UK. March.

Linda Pitkin / Green hellebore (Helleborus viridus), a rare/ scarce plant, Ranmore Common, Surrey, England, UK, March.

Linda Pitkin / Stinking hellebore (Helleborus foetidus), Surrey, England, UK February.

Linda Pitkin / Stinking hellebore (Helleborus foetidus), Surrey, England, UK February.

Linda Pitkin / Stinking hellebore (Helleborus foetidus), Surrey, England, February.

Linda Pitkin / Stinking hellebore (Helleborus foetidus), with flower and developing fruit. Staffhurst Wood, Surrey, England, April.

Linda Pitkin / Stinking hellebore (Helleborus foetidus), Surrey, England, March.