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Sori (clusters of sporangia) on the lower surface of the leaf

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sori (clusters of sporangia)
2  indusia

 
English name: Fern
Scientific name:
Familia: Polypodiaceae
Classis: Filicopsida
Phylum: Pteridophyta
Regnum: Plantae
The sporangia containing spores are arranged in clusters, called sori (singular sorus) at the underside of the leaves. In some genera the young sori are covered by kidney-shaped outgrowths called indusia (singular indusium)

last modified: 5 Jun 2014