When the fronds bow low, I know that the there are loads of spores on the underside.
I will always be amazed by the alternation of generations involving the spore.
They are neatly arranged in dots/sori underneath each frond on the Autumn Fern.
The light colored ones have burst open.
The darker sori are still encased in their clear cover.
When your ferns bow low, look for the amazing spores underneath.
FLOW on the frond