Fern Spore?

[DigitalScape]

On one of the fern fronds in the flower arrangement I have had some interesting "things" - I think they are fern spores.  And it appears that they "flowered".  The following images were shot with a 25mm extension tube on a 100mm macro lens.
 
 
   

 

[motleypixel]

Wow...last frame is really kewl...looks kind of like a pile of caviar.

[DigitalScape]

They do look like tiny piles of caviar.  Here is another close-up image of it.