looks like mold to me....... and no washig off that ...NONO
if you are unsrue,,, go the hard ways and trow it away... mold spreads, and it does not top while curing. the bud may look well on the surface. but if you open it the consitance is different and the colour too. I had my ( hard) lessons to learn in treating mold. The spores are spreading and yes they are no good smoke...
well its in your hand. Iam going the hard way and that means .. mold signs on the bud... the bud goes into the fire.... heads up and greetngis