Zebra Longwing or Zebra Heliconia Butterfly, (Heliconius charitonia), feeding on a flower near Panajachel, Guatemala

Three Mexican Silverspot Butterflies, Dione moneta poeyii, on a plant in the Atitlan Nature Reserve near Panajachel, Guatemala.

Pasqueflower, Pulsatilla vulgaris, Close view of one open mauve flower with yellow stamens. Plants, Flowers, Pasqueflower.

Pasqueflower, Pulsatilla vulgaris, Close view of one open mauve flower with yellow stamens. Plants, Flowers, Pasqueflower.

Pasqueflower, Pulsatilla vulgaris, Close view of one open mauve flower with yellow stamens. Plants, Flowers, Pasqueflower.

Pasqueflower, Pulsatilla vulgaris, Close view of one open mauve flower with yellow stamens. Plants, Flowers, Pasqueflower.

Pasqueflower, Pulsatilla vulgaris, Close view of one open mauve flower with yellow stamens. Plants, Flowers, Pasqueflower.

Morning Glory, Ipomoea purpurea, Close up studio shot of purple flower showing stamen.

Agapanthus, Studio shot of purple coloured flower against blue background.

Agapanthus, Studio shot of purple coloured flower against blue background.

Agapanthus, Studio shot of purple coloured flower against blue background.

Cactus, Parodia mutabilis, Close up detail of flower stamen.

Israel, Galilee, Nazareth, Common Globe Thistle, Echinops adenocaulos. Common Globe Thistle in Israel.

Israel, Galilee, Nazareth, Common Globe Thistle, Echinops adenocaulos. Common Globe Thistle in Israel.

Globe Thistle, Echinops, Bee on a globe thistle in the kitchen gardens of Buckland Abbey, Cornwall.

Globe thistle, Echinops orientalis, Bumble-bee Bombus terrestris, pollinating flowerhead.

White Globe Thistle, Echinops bannaticus 'Star Frost' Close up showing the spiky texture.

Globe thistle, Echinops bannaticus 'Taplow Blue', close up with Honey Bee.

Globe thistle, Echinops bannaticus, Close side view of one spherical spiky metallic blue flower against blue sky.

Globe thistle, Echinops 'Veitch's blue', Five white stems with spikey, spherical, deep blue heads viewed from an angle, creating a dynamic effect.

Globe Thistle, Echinops ritro 'Veitch's blue', A single flower not yet open with others behind in soft focus.

Globe thistle, Echinops ritro 'Veitch's blue', A single flower head with others behind in soft focus.

Globe Thistle, Echinops ritro.

Spherical seed heads of Globe thistle, Echinops cultivar.