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Radial section through xylem of pine

Legend:

1  ray
3  ray parenchyma 
4  tracheids
5  bordered pits
7  small pits
2  ray tracheids
6  ray pores

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

Radial section through xylem of pine. View a detail of the bordered pit in the tracheid wall cut radially