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Stomata in a cross section of a pine needle
Legend:
1 cuticula
3 stomata
4 subsidary cells
5 air cavity
2 stoma
6 chlorenchym cells
English name: Pine
Scientific name: Pinus sp.
Familia: Pinaceae
Classis: Coniferopsida
Phylum: Gymnospermae
Regnum: Plantae
IThe stomata in needles are sunken below the surface and are masked by the subsidiary cells. Both cell types show specila wall thickenings and are co-involved in closing and opening stomata. The stoma on the left side has been cut medianly while the right one has been sectioned at its edge
