HELP! Gray bumps on some leaves

I went to pack up the trades that I owe people and got to a small table off to the side. On it were several iris to be mailed out that I had dug, bleached and dried and one extra that came from an order I had placed.

I looked down and saw gray bumps on the leaves - almost like grains of rice. Everything got blasted with the hose and is sitting again in bleach.

What are the bumps? Should I toss everything out and not send anything anywhere?

Nothing else in the basement where I had the iris to be mailed had the bumps; just the iris on that small table.

HELP?!

Got a picture?

No, I don't.

Tried to take another shot but the flash is kicking in since it's later and overexposing things.