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Overview of a pine megasporangium

Legend:

1  integument
3  archegonia
4  egg nucleus
5  remnants of megasporangium
2  megagametophyte
 

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

Overview of a pine macrosporangium