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Home > All Images > 1991 > January > 25 Jan 1991

Images Dated 25th January 1991

Choose from 9 pictures in our Images Dated 25th January 1991 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Flower of the chickweed Featured 25 Jan 1991 Image

Flower of the chickweed

False-colour scanning electron micrograph of the flower of common chickweed, Stellaria media, a self- pollinating plant found on uncultivated ground in Europe. In the background are the five sepals or calyx (green), which serve a protective function. Next are the 5 notched petals or corolla (yellow), which attract insects by their bright colour. Calyx & corolla together form the perianth. Three stamens topped by pollen-bearing anthers (male organs) lie between the petals & the capsule. At centre are the tufts of the stigmas (female organs) supported on stalks called styles. These connect the pollen-receiving stigmas with the ovary. Magnification: x5 at 6x4.5cm size