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Scanning electron microscopy through all layers of a leaf of petunia

Legend:

1 upper epidermis
3  spongy parenchyma
4 air cavities (intercellular space)
5  lower epidermis
2  palisade parenchyma
6 multicellular hair on lower epidermis

English name: Petunia
Scientific name: Petunia sp.
Familia: Solanaceae
Classis: Dicotyledonas
Phylum: Angiospermae
Regnum: Plantae

The three-dimensional structures can be clearly observed in Scanning Electron Microscopy imaging. More data on this method can be found in the technique pages and in the virtual FESEM