yellow "eggs" under ferns

are these the cocoons that contain the seeds of the ferns which I understand they are a kind of powder?

compagniadelgiardinaggio.it

 

By the looks of them, I'd say they were the eggs of a beastie! The seeds (or spores) of ferns are arranged around the edges of the fronds (I think) ! !

Cheers, Tony.

 

Definitely not the Sporangia of that fern, as Tony says.