Interesting links

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GYMNOSPERMS: http://plantlet.org/gymnosperm/

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ANGIOSPERMS: https://flexbooks.ck12.org/cbook/ck-12-biology-flexbook-2.0/section/9.10/primary/lesson/flowering-plants-bio/

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MOSSES: https://www.kew.org/read-and-watch/moss

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FERNS: https://www.fs.fed.us/wildflowers/beauty/ferns/index.shtml

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http://www.arbolapp.es/

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