Michael D. Kern / Mexican Beaded Lizard (Heloderma horridum) captive, native to Mexico and Guatemala.

Wild Wonders of Europe / D'Amicis / Least primroses (Primula minima) flowering on slope, Liptovske kopi, Western Tatras, Carpathian Mountains, Slovakia, June 2009

Ross Hoddinott / Common primroses {Primula vulgaris} in flower, near Bradworthy, Devon, UK.

David Tipling / Primroses (Primula vulgaris) and Violet (Viola odorata) growing along banks of mountain stream Caithness, Scotland, UK, May.

David Tipling / Primroses (Primula vulgaris) growing along banks of mountain stream Caithness, Scotland, UK, May.

Felis Images / Primroses (Primula denticulata) Sikkim, India. May.

Nick Upton / Common primroses (Primula vulgaris) flowering in a garden, Wiltshire, UK, April.

Ernie Janes / Primroses (Primula vulgaris) growing in graveyard, Norfolk, England, UK, March.

Sue Daly / Primroses (Primula vulgaris) on cliff top, Sark, British Channel Islands, April.

Stephen Dalton / Primroses (Primula vulgaris) in woodland setting, Rookery Wood, Sussex, England, UK, April.

Stephen Dalton / Hazel (Corylus avellana) catkins shedding pollen, Primroses (Primula vulgaris) in woodland setting, Rookery Wood, Sussex, England, UK, February.

Stephen Dalton / Primroses (Primula vulgaris) flowers. Rookery Wood, Sussex, England, March

Ingo Arndt / Common evening primrose flowers {Oenothera biennis} Germany