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Macerated wood of Pinus

Legend:

1  large pit
2  bordered pit  

English name: Pine
Scientific name: Pinus sp.
Familia: Pinaceae
Classis: Coniferopsida
Phylum: Gymnospermae
Regnum: Plantae

Mutual contact between tracheids is enabled by bordered pits, while contact between parenchyma cells and tracheids is provided by special large pits.