Nigel Cattlin / Soft brome (Bromus hordeaceus) panicle with anthers exposed. Berkshire, England, UK. June.

Nigel Cattlin / Cocksfoot grass Dactylis glomerata) panicle, anthers releasing pollen. Berkshire, England, UK. June.

Nigel Cattlin / Cocksfoot grass (Dactylis glomerata) anthers bearing pollen within spikelets, close up. Berkshire, England, UK. June.

Nigel Cattlin / Cocksfoot grass (Dactylis glomerata) panicle, anthers bearing pollen. Berkshire, England, UK. June.

Nigel Cattlin / Cape pondweed (Aponogeton distachyos) on garden pond, Fly on petal. Berkshire, England, UK. May.

Nigel Cattlin / Tulip (Tulipa sp) flower cross section with mature anthers and style, close up. Berkshire, England, UK. April.

Nigel Cattlin / Tulip (Tulipa sp) flower cross section with immature anthers and style, close up. Berkshire, England, UK. April.

Nigel Cattlin / Tulip (Tulipa sp) flower with red petals, cross section showing mature anthers and style. Berkshire, England, UK. April.

Nigel Cattlin / Tulip (Tulipa sp) flower with orange petals, cross section showing mature anthers and style. Berkshire, England, UK. April.

Nigel Cattlin / Goat willow (Salix caprea) male catkins. Kennett and Avon Canal, Berkshire, England, UK. April.

Nigel Cattlin / White pasqueflower (Pulsatilla vulgaris 'Alba') cross section, close up of stamens and stigma, cultivated in garden. Berkshire, England, UK. April.

Nigel Cattlin / Daffodil (Narcissus cyclamineus 'Jetfire') cross section of flower trumpet with stamens, style and ovules inside ovary. March.