sorus

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$Tropical Bird\'s Nest Fern Leaf Asplenium nidus Macro with Central Rosette and Sorus Royalty Free Stock Photo$

$Tropical Bird\'s Nest Fern Leaf Asplenium nidus Macro with Central Rosette and Sorus Royalty Free Stock Photo$

$Crow\'s Nest Fern Leaf Closeup Asplenium nidus Wide Glossy Foliage and Sorus Royalty Free Stock Photo$

$Bird\'s Nest Fern Leaf with Spiral Arrangement and Underside Sorus Close Up Royalty Free Stock Photo$

Sorus under Fern's leaf-Wet slide under light microscope.