London, United Kingdom
Disc Floret, Sem
Photograph - Photograph
Disc floret. Coloured scanning electron micrograph (SEM) of a disc floret of a composite flower. Daisies (family Asteraceae, formerly Compositae) have inflorescences composed of two types of flowers. Disc florets such as this are found in the centre of the daisy. They are small, reproductive flowers with reduced petals (yellow) and stalks. They are surrounded by larger, usually sterile, ray florets (not seen) that act as guides to pollinating insects. Pollen is produced from stamens (blue) in the centre of the disc floret. Once pollinated, the ovules of the disc florets develop into the seeds of the plant.
May 11th, 2013
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