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Evening primroses 

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medical illustration of The evening primroses (Oenothera), originally native to North and South America, belong to the family of willowherbs or evening primroses. Here the surface of a pollen grain of the evening primrose is shown, with its characteristic filaments that hold the pollen in packets and probably support the attachment to insects.
Scanning-Electron Microscope, Magnification 11 000:1
Next medical illustration of The caterpillar of the Manduca Moth (Manduca sexta) feeds on leaves of the tobacco plant. The toxic nicotine stored in the leaf hairs accumulates in the body of the caterpillar without harming it. This makes it inedible for most enemies. If the attack with Manduca caterpillars gets to a certain point, the plant sends out chemical messengers attracting a species of bugs that kill and feed on the caterpillars.
Scanning electron microscope, magnification 200: 1

Manduca sexta, Caterpillar

The evening primroses (Oenothera), originally native to North and South America, belong to the family of willowherbs or evening primroses. Here the surface of a pollen grain of the evening primrose is shown, with its characteristic filaments that hold the pollen in packets and probably support the attachment to insects. Scanning-Electron Microscope, Magnification 11 000:1

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© Oliver Meckes