Poppy, Papaver somniferum. Single, open flower with white petals edged in pink above bud on bent stem.

Poppy, Papaver somniferum. Close cropped view of single flower with white petals edged in pink and showing detail of stamens surrounding developing seed head.

Water lily, Nymphaea Lone Star. Single flower with white petals and pink and deep yellow centre.

Water lily, Nymphaea cultivar. Single white flower with pink tipped petals and yellow centre.

Water lily, Nymphaea cultivar. White flower with yellow centre raised on stem above water and lily pads with another, part seen in immediate foreground.

Water Snowflake, two white flowers with yellow centres and feathery edges to the petals. Leaves of Giant Water Sensitive Plant, Aeschynomene fluitans part seen behind.

Water Snowflake, two white flowers with yellow centres and feathery edges to the petals. Leaves of Giant Water Sensitive Plant, Aeschynomene fluitans behind.

Spider lily, Crinum asiaticum Amaryllidaceae. White flower with narrow, re-curved petals at the 2009 Flower Festival in Chiang Mai, Thailand.

Slipper orchid with pattern of purple, cream and white extending over petals and lip at the 2011 Orchid Festival in Chiang Mai, Thailand.

Orchid, Lady Slipper orchid with mottled brown, cream and white petals and lip at the 2011 Orchid Festival in Chiang Mai, Thailand.

Hibiscus rosa-sinensis cultivar. Close up of white flower with detail of vivid red pistil and stamen.

Magnolia soulangeana. Close up of tulip-like white flowers flushed pink at the base against blue sky.