A wind pollinated flower is adapted to let the wind transport its pollen. It does not have the brightly coloured petals with scent and nectar of insect pollinated flowers because they are useless in wind pollination.
A wind pollinated flower has long stamens that can hang outside the flower and present the pollen to the wind. The stamens make large amounts of pollen because wind pollination is less sure than insect pollination. The wind carrying some of the pollen may never pass another flower while an insect collecting pollen from one flower is much more likely to visit another flower, and deliver it.
The stigma of a wind pollinated flower is large and divided up like a fluffy feather. This makes a net which hangs outside the flower. Pollen hitting the stigma becomes stuck to its sticky surface. A grass plant produces large numbers of wind pollinated flowers on the tip of a stalk. Trees like the hazel produce groups of wind pollinated flowers called catkins which hang down from twigs in early spring.