"hay seeds" in raspberries

[cecil39]

I have found something like hay seeds inside some of my raspberries when the "plug" is pulled out, I looked at some through a magnifying glass and they seem to have whiskers, they are not always in the oldest berries, some of them have so many that seem to "club together" and turn grey, it looks awfull, I am sure they are not alive, this is really putting me off, does anyone know what this is please?

[cecil39]

dried grass seeds